Home » bintang » Page 3
Tag:

bintang

10 Brightest Stars in the Solar System, One of which is a Sign of the Coming Flood
Technology

10 Brightest Stars in the Solar System, One of which is a Sign of the Coming Flood

by Chief editor of world-today-news.com
written by Chief editor of world-today-news.com

As a double star system, Alpha Centauri displays the movement of its light with two components orbiting a point within a period of 80 years, with a distance between them ranging from 35.6 to 11.2 astronomical units.

Located on the main sequence (class V) with types G and K stars, Alpha Centauri is dazzling at a distance of about 4.4 light years. Its size of 1.22 and 0.86 times that of the Sun adds unique characteristics to its silhouette. With a combined magnitude of -0.27, Alpha Centauri appears as a single star, being the third brightest sight in the night sky after Sirius and Canopus.

With a declination of -60°50′, Alpha Centauri offers its charm to those living in the southern hemisphere. For those at latitudes above 29°10′ south, Alpha Centauri will be a circumpolar star, dancing in the sky without ever setting.

In late April or early May, Alpha Centauri reaches its best appearance, hovering around the meridian at midnight. Together with Beta Centauri, they serve as ‘pointers towards Crux,’ helping to distinguish it from fake Crux.

With Proxima Centauri as the third component, this system forms three parts that are gravitationally related. Although Proxima Centauri may appear isolated to the naked eye, the beauty of this system enriches our view of the life of stars in the night sky.

2023-11-27 15:18:22
#Brightest #Stars #Solar #System #Sign #Coming #Flood

0 comments
0 FacebookTwitterPinterestEmail
International Scientists Discover Brown Star Emitting Extreme Heat
Health

International Scientists Discover Brown Star Emitting Extreme Heat

by Chief editor of world-today-news.com
written by Chief editor of world-today-news.com

Wednesday, 15 November 2023 – 19:30 WIB

Gadget– International scientists recently discovered a brown star that emits heat far exceeding the heat emitted by the sun.

This brown star is located about 1,400 light years from Earth. This discovery was made by an international team of astronomers led by astrophysicist Na’ama Hallakoun from the Weizmann Institute of Science.

This brown star has an orbit very close to its host star, so it absorbs a lot of heat from the star.

This causes the temperature of this brown star to become very hot, so that it can melt the molecules in its atmosphere.

For comparison, the temperature of the sun is 5,778 Kelvin.

Previously, NASA described brown stars as small, low-mass stars that “failed.” Brown stars are often referred to as the “missing link” between gas giant planets and stars.

These celestial bodies are often difficult to observe because they emit low light and energy. In fact, they were virtually undetectable until the late 1980s.

2023-11-15 12:30:00
#hottest #object #universe #sun #planet #scientists #discover

0 comments
0 FacebookTwitterPinterestEmail
Health

NASA’s Kepler Space Telescope: Discovery of 7 Planets Around Star Kepler-385

by Chief editor of world-today-news.com
written by Chief editor of world-today-news.com

TEMPO.CO, Jakarta – In our solar system, the small rocky Mercury is planet which orbits closest to the sun, which is constantly baked by solar radiation that is seven times more intense than what we experience on Earth.

Astronomers using data obtained from NASA’s now-defunct Kepler space telescope have identified seven planets orbiting a star in our Milky Way galaxy, and all of them are suffering from the star’s fury – radiant energy – that is even more brutal than Mercury. It is the second most abundant planet discovered so far around any star outside our solar system.

The seven planets are larger than Earth, the largest of the four rocky planets in our solar system, but smaller than Neptune, the smallest of the four gaseous planets in our solar system. All have orbits closer to their parent star, called Kepler-385, than Mercury’s average distance to the Sun.

“All of the planets are ‘fried’ more intensely than any planet in our solar system,” said astronomer Jack Lissauer of NASA’s Ames Research Center in California, lead author of the study that will be published in the Journal of Planetary Science and was recently posted. on the research site arXiv.

Scientists have to date identified more than 5,500 exoplanets – planets outside our solar system – and discovered hundreds of stars with multiple exoplanets. However, Kepler-385’s collection of seven exoplanets is only surpassed by the eight exoplanets known to orbit a star called Kepler-90. One other star, TRAPPIST-1, is known to have seven. Our solar system has eight planets.

Advertising

Advertising

The Kepler space telescope, NASA’s first planet-hunting mission, was discontinued in 2018. It detects exoplanets by observing a small dip in a star’s brightness when a planet passes in front of it from our perspective.

The new study catalogs about 4,400 planets seen by the telescope from its launch in 2009 until its retirement. Scientists continue to analyze the data, as evidenced by the identification of the exoplanet population Kepler-385.

This study further illustrates that there are many different types of planetary systems – and many of them may not be very similar to our solar system. There are almost certainly more than eight planetary systems, but telescopes so far have not been sensitive enough to detect smaller exoplanets well.

The star Kepler-385 has a diameter and mass about 10% larger than our Sun, but is brighter and slightly hotter. It is located about 5,000 light years from Earth. A light year is the distance light travels in a year, 5.9 trillion miles (9.5 trillion km).

The smallest of its seven planets – 20% larger than Earth – orbits closest to the star, at a distance of just over 4% of the distance between our planet and the sun. The next planet is about 20% larger than the innermost planet.

“Both are likely rocky, and tidally locked, showing the same face towards their star at all times, as the moon does towards Earth,” Lissauer said. This makes them very hot near their closest point to the star. But because any atmosphere would likely have been boiling for a long time, the hemisphere facing away from the star would always be dark and very cold.

Most of the other planets are about 2.4 times larger than Earth. “All likely have thick, hot atmospheres across their surfaces, which may be well below their cloud tops,” Lissauer said. “The outermost planet orbits about 40% of the distance between Earth and the Sun. The distance is slightly smaller than the average distance between the Sun and Mercury.”

In search of life beyond Earth, these planets are not promising candidates. “The chance of life on any of these seven planets is very small,” said Lissauer. “There may be additional planets orbiting further away from the star that we don’t know about because they are more difficult to detect. In particular, if there were an Earth-sized planet in a system within Earth-Sun distance, we would not have detected it yet.”

Editor’s Choice: Elon Musk’s X Restrictions Are Harmful, Hamas & Israel Attacks Can’t Be Destroyed

Always update the latest information. Listen to breaking news and selected news from Tempo.co on the Telegram channel “Tempo.co Update”. Click to join. You need to install the Telegram application first.

2023-11-07 02:45:59
#Findings #Planets #Solar #System #Apparently #Roasted #Stars #Tekno #Tempo

0 comments
0 FacebookTwitterPinterestEmail
Giant Planets Pushing Out Small Neighbors: New Studies Reveal Planetary Chaos
Health

Giant Planets Pushing Out Small Neighbors: New Studies Reveal Planetary Chaos

by Chief editor of world-today-news.com
written by Chief editor of world-today-news.com

Jakarta –

The giant planets apparently tend to drive out their neighbors, the small planets. This was revealed in two scientific articles in the Astronomical journal.

In these two new studies, it can be seen that in some multiplanetary systems, giant planets tend to push their smaller neighbors out of their orbits and wreak havoc on their climates.

In one of two papers, University of California, Riverside astrophysicist Stephen Kane details how the pull of the giant planets in the HD 141399 system will likely push its Earth-like neighbor out of the habitable zone.

HD 141399 is an early K dwarf star located 121 light years away in the constellation Boötes. The star hosts four giant planets with masses ranging between 0.45 and 1.36 Jupiter masses.

Unlike most other known planetary systems, these four planets are located much farther from their parent stars.

“The HD 141399 system, which consists of four giant planets, is very rare among known exoplanet architecture,” said Professor Kane, quoted from Sci.News.

“According to NASA’s Exoplanet Archive, HD 141399 is one of (only) two planetary systems known to have at least four planets, all of which are more massive than Saturn,” he said.

“Another system is HR 8799, with four widely separated planets detected via direct imaging,” he continued.

According to Kane, the HD 141399 system is an extraordinary opportunity to study the formation, dynamics and evolution of unusual planetary architecture. Taking into account data about the planets in the system, Professor Kane carried out several computer simulations to understand the influence of these four giants. He wanted to specifically look at the habitable zone of this star system and see if Earth could remain in a stable orbit there.

“The answer is yes, but the chances are very small. There are only certain areas where the enormous gravitational pull will not knock a rocky planet out of its orbit and make it fly out of the zone,” said Professor Kane.

While the first research article suggests giant planets outside the habitable zone destroy the chances of life. In the second paper, written by Professor Kane and his colleague, Dr Tara Fetherolf from the University of California, Riverside, it is explained how a large planet in the middle of this zone would destroy life. has a similar effect.

The authors examined the Gliese 357 system (also known as GJ 357), located just 30 light years away in the constellation Hydra. The parent star hosts three exoplanets, namely Gliese 357b, c and with orbital periods of 4, 9 and 56 days.

Previous studies found that Gliese 357d is in the system’s habitable zone and is about 6 times the mass of Earth. However, the new study suggests the mass is likely much larger.

“It is possible that Gliese 357d has a mass of 10 Earth masses, which means it is probably not terrestrial, so there is no life on it. Or at least, it would not be able to host life as we know it,” said Professor Kane.

Professor Kane and Dr Fetherolf demonstrated that the planet is much larger than previously believed. Therefore, this will definitely prevent more Earth-like planets from existing in the habitable zone alongside it. While there are also certain locations in this system’s habitable zone that could potentially host Earth, its orbit would be highly elliptical around the star.

“In other words, their orbits would produce chaotic climates on these planets,” said Professor Kane.

“Our paper is really a warning, when we find planets in the habitable zone, don’t assume that the planet is automatically capable of hosting life,” he stressed.

This paper shows how rare it is to find the right conditions to host life elsewhere in the universe.

“Our work gives us more reasons to be grateful for the particular planetary configuration we have in the solar system,” said Professor Kane.

Watch the video “Scientists Say Humans Have Pushed Earth into the ‘Planetary Boundary’ Danger Zone”

(nah/pal)

2023-11-02 11:00:00
#Large #Planets #Tend #Kick #Small #Planets #Number #Multiplanet #Systems

0 comments
0 FacebookTwitterPinterestEmail
Unusual Effects of an Annular Solar Eclipse: Temperature Drop, Wind Direction Change, Animal Behavior, and Radio Wave Disruptions
Technology

Unusual Effects of an Annular Solar Eclipse: Temperature Drop, Wind Direction Change, Animal Behavior, and Radio Wave Disruptions

by Chief editor of world-today-news.com
written by Chief editor of world-today-news.com

REPUBLIKA.CO.ID, JAKARTA — An annular solar eclipse is predicted to take place on October 14 and 15 2023. This annular solar eclipse can only be seen directly in the United States. However, people who are curious can see it online on NASA’s YouTube.

Moment solar eclipse progress, there are a number of strange but real things that can happen. A solar eclipse occurs when the position moon located between the earth and the sun. As a result, the moon blocks some or all of the sunlight in the earth’s sky.

“Even though it’s not a total solar eclipse, an eclipse can still cause some strange and unnatural effects,” said astronomer Tyler Nordgren. Here are some of these unusual things, quoted from the page Live ScienceSaturday (14/10/2023).

1. Cooler temperatures

Prepare a jacket when an eclipse occurs, because the air temperature can drop quickly. The rate of decline depends on the location, time and type of eclipse. During a total solar eclipse, the temperature drop is usually around 2.8 to 5.6 degrees Celsius.

During an annular eclipse (when the sun appears like a “ring of fire”), the temperature change is less extreme, but it may still feel colder. “It felt like there were clouds covering the sun. But there were no clouds over the sun, which just added to the strangeness,” said Nordgren.

2. Change in wind direction

As the temperature decreases, the area experiencing the eclipse may also experience a change in wind direction. A study published in 2016 explains that the wind subsides as the moon gets closer to blocking the sun. Once the moon reaches its peak coverage, the wind begins to blow again. However, it often blows in a different direction. This effect occurs in total, annular, and even partial eclipses.

3. Strange behavior of a number of animals

When the sky suddenly darkens in the middle of the day, some animals can become very confused. The cicada-like crepuscular creatures thought it was night and began to chirp. Cows and horses may go to sleep, while birds return to their roosts.

4. Random radio waves

Both total eclipses and annular eclipses disrupt certain radio wave frequencies, and no one knows for sure why. Scientists suspect this may have something to do with the way the sun interacts with Earth’s ionosphere, which is known to fluctuate in response to things like solar flares and solar storms.

2023-10-14 03:18:06
#Annular #Solar #Eclipse #Occurs #October #Strange #Happen #Republika #Online

0 comments
0 FacebookTwitterPinterestEmail
Unusual Effects of an Annular Solar Eclipse in 2023
Technology

Unusual Effects of an Annular Solar Eclipse in 2023

by Chief editor of world-today-news.com
written by Chief editor of world-today-news.com

REPUBLIKA.CO.ID, JAKARTA — An annular solar eclipse is predicted to take place on October 14 and 15 2023. This annular solar eclipse can only be seen directly in the United States. However, people who are curious can see it online on NASA’s YouTube.

Moment solar eclipse progress, there are a number of strange but real things that can happen. A solar eclipse occurs when the position moon located between the earth and the sun. As a result, the moon blocks some or all of the sunlight in the earth’s sky.

“Even though it’s not a total solar eclipse, an eclipse can still cause some strange and unnatural effects,” said astronomer Tyler Nordgren. Here are some of these unusual things, quoted from the page Live ScienceSaturday (14/10/2023).

1. Cooler temperatures

Prepare a jacket when an eclipse occurs, because the air temperature can drop quickly. The rate of decline depends on the location, time and type of eclipse. During a total solar eclipse, the temperature drop is usually around 2.8 to 5.6 degrees Celsius.

During an annular eclipse (when the sun appears like a “ring of fire”), the temperature change is less extreme, but it may still feel colder. “It felt like there were clouds covering the sun. But there were no clouds over the sun, which just added to the strangeness,” said Nordgren.

2. Change in wind direction

As the temperature decreases, the area experiencing the eclipse may also experience a change in wind direction. A study published in 2016 explains that the wind subsides as the moon gets closer to blocking the sun. Once the moon reaches its peak coverage, the wind begins to blow again. However, it often blows in a different direction. This effect occurs in total, annular, and even partial eclipses.

3. Strange behavior of a number of animals

When the sky suddenly darkens in the middle of the day, some animals can become very confused. The cicada-like crepuscular creatures thought it was night and began to chirp. Cows and horses may go to sleep, while birds return to their roosts.

4. Random radio waves

Both total eclipses and annular eclipses disrupt certain radio wave frequencies, and no one knows for sure why. Scientists suspect this may have something to do with the way the sun interacts with Earth’s ionosphere, which is known to fluctuate in response to things like solar flares and solar storms.

5. Microbes affected

Microorganisms can also be susceptible to the strange vibrations of a solar eclipse. A 2011 study of bacteria growing in laboratory petri dishes during a total eclipse in India found that the microbes became smaller and shaped differently near the peak of the eclipse. However, these results have not been replicated in other eclipse situations.

6. Strange shadows

When an eclipse occurs overhead, most eyes will be focused on the sky. But take a moment to look at the ground. This is because the shadows cast by trees and other objects that cause the “pinhole” effect will be speckled like small crescent moons. During the peak of the annular eclipse, small circles of light were visible everywhere.

7. Stars and planets appear in the sky

This effect only appears during a total solar eclipse, because the moon blocks quite a lot of sunlight bintang and planets are visible in the sky. However, only the brightest stars and planets will be visible, and this depends on the position of the earth.

2023-10-14 03:18:06
#Annular #Solar #Eclipse #Occurs #October #Strange #Happen #Republika #Online

0 comments
0 FacebookTwitterPinterestEmail
Newer Posts
Older Posts
@2025 - All Right Reserved.

Hosted by Byohosting – Most Recommended Web Hosting – for complains, abuse, advertising contact: contact@world-today-news.com