Scientist: If Aliens Come to Earth, They Can’t Survive

Scientist: If Aliens Come to Earth, They Can’t Survive

If they find a way to speed up the journey of the universe, it will cost a lot because it requires a very large amount of energy, even the distances between the stars are too far can threaten their life in space. However, says Dr Shostak, if you’re willing to put in the time, you might be able to cross this distance.


Mouse sperm can survive, humans ready to migrate to Mars?

Mouse sperm can survive, humans ready to migrate to Mars?

KONTAN.CO.ID – JAKARTA. Recent studies have shown that humans can reproduce on Mars. This is based on the observation that sperm can survive on the red planet for up to 200 years.

The findings are part of a six-year experiment where scientists strayed mouse sperm on the International Space Station and exposed it to radiation.

As reported The Daily Mail, researchers believe radiation in space will destroy human DNA and make breeding impossible. Cancer caused by radiation is another concern.

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But surprisingly, after six years, scientists found that the sperm of the mice stored on the space station was still healthy. They also exposed it to X-rays on Earth and found it did not affect fertility.

Professor Sayaka Wakayama, from Yamanashi University, Japan, told The Daily Mail that many genetically normal offspring were obtained from the study. “This discovery is important for mankind to advance to the space age,” he said.

He added, when the time comes for humankind to migrate to other planets, then we need to maintain the diversity of genetic resources, not only for humans but also for pets.

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Seriously, Many Space Trips Could Have A Bad Impact on Earth

Seriously, Many Space Trips Could Have A Bad Impact on Earth
JAKARTA – Travel outer space have a major impact on the environment. If the trip to space is for research purposes, it’s still understandable. But when it comes to tourist travel, as Jeff Bezos would, many experts question it.

Companies including SpaceX, Virgin Galactic and Space Adventures want to make space tourism available to the general public. And it turns out that many people are interested.

READ: International Space Station Damaged by Space Debris

However, in the midst of the current climate crisis on Earth, sending billionaires to outer space with rockets is not an environmentally friendly decision.

The reason is, the burning rocket goes through a large amount of propellant to take off and land. Whether it’s kerosene in SpaceX’s Falcon 9 rocket, methane in Starship, or liquid hydrogen in NASA’s new Space Launch System (SLS), it burns that material and impacts Earth’s atmosphere.

No matter what fuel is used, all launches emit a lot of heat which stirs nitrogen in the atmosphere to create the annoying oxides of nitrogen.

“Depending on where they are released at high altitudes, those nitrogen oxides can contribute to ozone formation or ozone depletion,” explains Eloise Marais, professor of physical geography at University College London.

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In the stratosphere, where ozone acts as a shield against ultraviolet radiation from the sun, that heat can eat away at ozone.

While in the troposphere closer to the ground, that heat can add to ozone. Unfortunately, there it acts more like a greenhouse gas and retains heat.

Different fuels damage the atmosphere in different ways. “[Nitrogen oksida] important, of course, but there are also solid fuels that burn and produce chlorine, “Marais said.

“Chlorine contributes to the destruction of the ozone layer and is very, very efficient at doing that.”

Hydrocarbon fuels such as kerosene and methane produce carbon dioxide, a well-known greenhouse gas, as well as black carbon, aka soot, which absorbs heat and warms Earth’s temperatures even more.

Even before the launch took place, the production of propellants was already having an impact on the environment. And each launch uses thousands of tons of propellant to achieve outer space .

So it’s conceivable that if rocket launches become more common, their impact on the environment will increase.

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Marais points out that we don’t yet know the full effect of rocket fuel on the atmosphere and the environment, because researchers are just beginning to study the topic.



Trying to contact aliens could end life on Earth

Trying to contact aliens could end life on Earth


Trying to contact alien and his interstellar companions is not a good idea, because it could end life on Earth. That’s the opinion of a number of leading physicists.

In an article, physicist and science writer Mark Buchanan writes about the recent excitement about UFOs and aliens, and alludes to an upcoming report from the Pentagon on the so-called ‘Unexplained Aerial Phenomena’ (UAP).

In April 2020, the US Department of Defense released a video showing US Navy aircraft coming into contact with UAP. The object flew at a speed that was impossible for a man-made machine. Netizens who saw the video commented that it was one of the proofs of the existence of technology alien.

But quoted from, Buchanan and a number of other experts in this field argue that contact with aliens is not something we should pursue.

“Possibly, we should all be grateful that we don’t yet have any evidence of contact with alien civilizations. Trying to communicate with extraterrestrials, if they exist, could be very dangerous for us,” he said.

According to Buchanan, the search for aliens has reached a stage of technological sophistication and the associated risks require strict regulation at national and international levels.

“Without oversight, even a single person with access to powerful transmission technologies, can take actions that affect the future of the entire planet,” he explained.

Buchanan stated, if we meet alien, they will most likely be much more technologically advanced than us. He likens it to when Christopher Columbus came to North America and the natives were at stake by the technologically superior Europeans.

“Most of the stars in our galaxy are much older than the Sun. If civilizations appeared frequently enough on some planets, then there should be many civilizations in our galaxy that are millions of years more advanced than our own. Many of these would likely take significant steps to begin with.” explore and possibly colonize the galaxy,” he explained.

He added that our history on Earth has provided us with many examples of what can happen when civilizations with unequal technologies meet. Generally, the more technologically advanced have destroyed or enslaved the others.

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Humans Will Be Able to Make Children on Planet Mars

Humans Will Be Able to Make Children on Planet Mars


Humans will be able to reproduce in Mars because sperm can survive there for up to 200 years, scientists have found. They are increasingly convinced that humans can live on the Red Planet.

At least, based on these findings, the hope of realizing a space colony is one step closer. But there are still many questions about how people can have sex in microgravity on Mars.

Experts previously thought radiation in space would damage our DNA and make reproduction impossible. But this assumption changed when scientists stored mouse sperm on the International Space Station for six years and it was found to be healthy.

Sperm from 66 mice were first put into more than 30 glass tubes in 2012. Scientists then decided on the best sperm to produce offspring.

The three best sperm were then launched onto the ISS on August 4, 2013, and the other three were stored on the ground in Tsukuba, Japan, under nearly identical conditions. Here, they are exposed to the fierce radiation of outer space.

The first box was returned to Earth on May 19, 2014 to confirm whether the experiments carried out had worked well or not.

After examining these samples and comparing them with those in the field, the experts decided to go ahead with the project. The second box was returned on May 11, 2016, exactly two years and nine months after its launch.

The latter was sent back on June 3, 2019, five years and 10 months later, making it the longest space experiment in the history of biological research. Controlled boxes were also returned from JAXA to Yamanashi University in Japan at the same time.

Professor Sayaka Wakayama said: “A lot of genetically normal offspring were obtained. This discovery is very important for mankind. When the time comes to migrate to other planets, we need to maintain the diversity of genetic resources, not only for humans but also for domestic animals. , viewed Tuesday (15/6/2021).

The discovery comes three days after NASA’s Ingenuity helicopter made its seventh successful flight over Mars. This time he landed on an airstrip previously only visible to orbiters Mars.

The helicopter successfully made its journey on June 6, more than two weeks after its last flight. The drone also took black-and-white photos during its flight.

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NASA Builds Space Telescope to Protect Earth from Asteroids

NASA Builds Space Telescope to Protect Earth from Asteroids


NASA planning to build space telescope to detect asteroid potentially harmful to the Earth. The telescope will be named the Near-Earth Object Surveyor or NEO Surveyor.

The telescope will help NASA’s efforts to protect Earth by detecting objects that are pointing too close to Earth. NASA itself classifies asteroids and comets within 48 million km as near-Earth objects (NEOs).

“We estimate there are about 25,000 NEOs large enough to destroy an area like Southern California,” said Amy Mainzer, Principal Investigator of the University of Arizona’s NEO Surveyor. Digital Trends, Monday (14/6/2021).

“Once they are larger than 137 meters in diameter, they can cause severe regional damage. We want to find these objects, and as many smaller ones as possible.”

The NEO Surveyor will be equipped with a heat-sensitive camera so that it can make observations that are more sensitive than existing telescopes on Earth. By looking at infrared data, the telescope will be able to detect objects, track their position and estimate their size.

“Asteroids and comets that approach Earth are warmed by the sun, and they emit heat that can be observed by the NEO Surveyor mission. Even asteroids as dark as chunks of coal cannot hide from our infrared eyes,” explains Manzier.

NASA has approved the NEO Surveyor project to advance to the next stage of development. The telescope is currently in the concept stage, but will move into the design stage where details about the design and instruments will be determined.

If all goes according to plan, the telescope will launch in the first half of 2026. According to NASA’s NEO Surveyor Program Scientist, Michael Kelley, this telescope will be able to protect Earth within 10 years of being in space.

“NEO Surveyor will have the ability to accelerate the rate at which NASA can find asteroids and comets that could harm Earth, and is designed to find 90% of asteroids 140 meters or larger within a decade of launch,” said Kelley.

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7 Asteroids Passing Near Earth This Week, Are They Dangerous?

7 Asteroids Passing Near Earth This Week, Are They Dangerous?

“It’s only ‘potentially dangerous’ in the long term. It has no chance of impacting Earth this week, or even any time in the next 2 centuries,” explains Dr. Paul Chodas, researcher and director of the Center for Near Earth Object Studies at NASA, was quoted as saying CBS News. “In fact, we have calculated a near-future approach for the next 200 years and we know that it cannot impact Earth in that time, or maybe forever.”


Ion Propulsion System Shortens Space Travel

Ion Propulsion System Shortens Space Travel

Some time ago, China successfully put the Tianhe core module into orbit for the construction of the Tiangong space station. The success of orbiting Tianhe has further paved the way for manned missions to Mars, especially now that China has utilized a new, never-before-used propulsion system for its manned space probe.
The Tianhe core module is driven by 4 ion booster units known as the Hall Effect Thruster (HET) and at the end of this month astronauts will visit the module for the first time.
This propulsion is an electric propulsion system that has been around for decades and could dramatically cut the travel time to the red planet.
The four propulsion units that power the Tianhe module are relatively small when compared to a rocket engine, but they are extremely efficient.
“In comparison, the International Space Station (ISS) requires more than 4 tons of fuel per year to stay in Earth orbit. If the ISS was driven by an ion booster, its power consumption would drop to just 400 kilograms and requires one charging mission per year,” the Chinese Academy of Sciences said in a statement.
With current rocket technology, a manned mission to Mars could take up to 8 months and would require a very large spacecraft to transport fuel and other supplies.
But now scientists have calculated that a space probe with a power of 200 megawatts of ions could shorten the trip to Mars to just 39 days and allow the mission to use a smaller probe or carry more supplies.
Along with the increasingly fierce competition for space exploration between China and the United States, this electronic propulsion technology is getting more attention. SpaceX, the US aerospace company founded by Elon Musk, even plans to fill space with tens of thousands of tiny satellites propelled by ion boosters.
China itself has already taken advantage of this technology for a number of its satellites and will expand its use until it will be used in a nuclear-powered manned spacecraft that will take astronauts to Mars.
Most of the ion boosters already deployed in space have a power of around 1 kilowatt and China will expand that capacity for its space program.
“For large missions such as manned space exploration, the electrical power to support the ion propulsion system can exceed 5MW maybe even up to 500MW. The greater the power, the longer and shorter the travel time in space,” wrote Hang Guanrong and his partner from Shanghai Space. Station Institute in a paper published in the domestic journal Aerospace China.

Was Abandoned
The driving force for the Hall effect was theoretically first discovered in the 1930s by a US physicist named Edwin Herbert Hall, but this theory was actually applied by Soviet scientists and engineers.
In the ’70s, the Soviets began manufacturing satellites with Hall effect boosters and even sold some of their engines to the United States National Aeronautics and Space Administration (NASA).
NASA itself has built this propulsion system itself but the US space authorities do not prioritize the use of this machine for a number of reasons such as electrically charged particles can erode engine components, shortening the life of satellites and endangering astronauts.
Meanwhile, Chinese scientists are secretly working to perfect this technology. “Only a few experts in this field are aware of the improvement efforts,” said an aerospace scientist from Beijing who asked not to be identified because of the secrecy of the program.
While Hang Guanrong wrote that trials of the Hall effect propulsion design have been carried out with a 50 KW engine capacity that will be used for large manned missions, cargo transport missions to the Moon and Mars.
When turned on, the Hall effect propulsion engine produces bluish smoke and a halo ring caused by the extremely hot electrically charged particles escaping from the engine that generates speeds over 30 times the speed of sound.
The Chinese team of scientists themselves have carried out a series of tests of the Hall effect booster which they have refined to ensure the viability and durability of the machine so that it can be safely used for manned space missions.
Based on the results of trials conducted by the Chinese Academy of Sciences, the ion booster machine can run non-stop for 8,240 hours or more than 11 months without any faults/damages. SCMP/I-

(they / I-1)
Editor : Ilham Sudrajat

Author : Ilham Sudrajat


The Universe’s Biggest Star Explosion Has Been Captured on Camera

The Universe’s Biggest Star Explosion Has Been Captured on Camera


Recently, a group of scientists managed to record star explosion largest in the universe. This event is the most energetic radiation and the longest gamma-ray burst of the gamma-ray burst (GRB).

Gamma rays in the universe are associated with the collapse of fast-rotating massive stars into black holes. They are categorized into two distinct phases: a chaotic initial phase that lasts for tens of seconds and an afterglow phase that fades smoothly.

Using a special observatory in Namibia, scientists watched the GRB phenomenon. The event, dubbed GRB 190829A, is one of the closest gamma-ray bursts observed so far, with a distance of about a billion light years.

According to the research team, explosion it likely marks the moment when a large star dies in a supernova explosion and begins its transition into a black hole.

The Fermi and Swift telescopes detected the event on August 29, 2019 in the constellation Eridanus. Scientists then immediately caught the remnants of the explosion when it was spotted by the HESS telescope.

“We were able to determine the spectrum of GRB 190829A to an energy of 3.3 tera-electronvolts, about a trillion times more energetic than a photon of visible light,” said one of the researchers, Edna Ruiz-Velasco of the Max Planck Institute for Nuclear Physics in Heidelberg.

“That’s what’s so remarkable about these gamma-ray bursts. They occur in our cosmic backyard where very high-energy photons are not absorbed in collisions with the backlight on their way to Earth, as happens at greater distances in the cosmos.” he explained.

After following the afterglow for more than three days, scientists discovered surprising similarities between the X-ray emission and the very high-energy gamma-ray emission from the remnants of the explosion.

Another researcher, Sylvia Zhu of the DESY Science Communication Lab, said established theories assume that a separate mechanism must produce two emission components: the X-ray component comes from ultra-fast electrons reflected in the strong magnetic field of the Sun.

“This synchrotron process is very similar to how particle accelerators on Earth produce bright X-rays for scientific investigations,” he said.

Existing theory suggests that electrons in gamma-ray bursts collide with synchrotron photons and increase them to gamma-ray energy in a process called Compton self-synchronization.

But observations of GRB 190829A’s light now show that both components, X-rays and gamma rays, fade in synchrony. Also, the gamma-ray spectrum matches the extrapolation of the X-ray spectrum. This means that the very high energy X-rays and gamma rays in this glow are produced by the same mechanism.

This finding is very meaningful for scientists because it opens the opportunity to be able to detect explosion future gamma rays. Next-generation instruments such as the Cherenkov Telescope Array currently under construction in the Chilean Andes and on the Canary Island of La Palma, hold great promise for doing so.




The Origins of Oumuamua, Finally Solved This Space Mystery

The Origins of Oumuamua, Finally Solved This Space Mystery

Oumuamua. ( – Oumuamua, one of outer mystery that has caught the attention of scientists. Until now finally solved the origins of Oumuamua.

Object outer space This itself had passed near Earth four years ago, and moved between stars.

According to recent research, the cigar-shaped object called Oumuamua may be a hydrogen iceberg that emerged from a cloud of space gas.

Based on calculations of the intruder’s orbit, they estimate the age of this space mystery object to be around 35 million years.

Oumuamua took the world by storm in October 2017 when it was identified as the first known visitor to another star system.

A pair of Harvard scientists suggested the long, thin object was a spacecraft, sparking a flurry of scans by astronomers as it flew.

Experts found no sign of alien signals and concluded that the extraterrestrial guest was a comet or a asteroid.

Oumuamua. (

Astronomers have spent years since trying to figure out exactly where the space rover came from.

In the new study, researchers at Yale University suggest the object may have come from a plume of gas and dust hundreds of light years from Earth.

This cold, dark region is known as a molecular cloud, a point in interstellar space that gives rise to stars.

They have no clear outer boundary, and are so large that they can be seen in the night sky against the brighter background of the Milky Way.

According to the study, which uses computer models to track Oumuamua’s historical orbit, the object has two possible origins.

They are a star cluster called the Carina Moving Group and the Columbia association, about 100 and 160 million light-years apart, respectively.

Based on the team’s calculations, the two clusters should produce more interstellar objects over time.

Recent research on the origins of Oumuamua. [Arxiv]
Recent research the origin of Oumuamua. [Arxiv]

That is, we can expect to detect more of them in the coming decades.

Oumuamua baffles scientists because it appears to behave like between a comet and an asteroid.

The interstellar visitor is long and thin, is of an unusual shape, and travels at 200,000 mph while rotating in a “falling” motion.

Strangest of all, the object seemed to be accelerating on its way, indicating that it was being powered by something.

Some scientists think that the increase in speed is the work of alien machines, while others believe it is simply caused by the natural release of gases.

The new study aligns with research published last year that called Oumuamua a hydrogen iceberg ejected by a molecular cloud.

That is the origin of Oumuamua, an object that has long been a mystery in outer space. The findings are published in the pre-print journal Arxiv. ( Dythia Novianty).