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Planet earth

New Research Reveals Origin of Saturn’s Rings: Icy Debris from Previous Moon

by Chief editor of world-today-news.com February 4, 2024

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

Origin of Saturn’s Rings. PHOTO/DAILY

TEXAS – Saturn being one of the planets in our Solar System that has very beautiful rings. And some of us may have wondered where the planet’s rings come from.

Recent research led by Robin Canup of the Southwest Research Institute in Boulder, Colorado has revealed its origins. The following is the explanation, according to Live Science, Sunday (4/2/2024).

In a theory published in the journal Nature, Robin said that Saturn’s rings actually originate from the icy remains of the previous Moon’s debris.

That said, when Saturn and its moons formed along with the rest of the solar system 4.5 billion years ago, one of Saturn’s large moons formed too close to the planet to maintain a stable orbit.

The moon began to rotate inward, and as it did, Saturn’s gravity tore off its outer icy layer and threw it into orbit to create the rings we see today.

And after 10,000 years of denudation, the remaining rocky core of the moon finally hit Saturn and was destroyed. Robin himself has created a computer model that simulates the series of events.

The model he created explains that 90-95 percent of Saturn’s rings consist of. He also firmly believes that the waste rock and dust came from meteorites that peppered the rings for billions of years.

Previously, the theory of Saturn’s rings was revealed by Larry Esposito, a leading planetary astronomer who worked on NASA’s Cassini Mission to Saturn. He suggested Saturn’s rings came from a small Moon or a passing comet that was torn apart by the planet’s gravity.

However, the theory fails to explain why the rings are so icy, as moons and comets contain a lot of rock. Robin’s “shaved ice” theory is the most accepted by scientists.

However, Robin’s new theory cannot explain everything that happens around Saturn, such as the small moons that mark the edge of the rings. So it still takes a lot of research to reveal the truth.

(wbs)

2024-02-04 12:21:19
#Saturns #Rings #Heres #explanation

February 4, 2024 0 comments

Technology

7 Fascinating Facts About Venus: From Being the Hottest Planet to its Retrograde Rotation

by Chief editor of world-today-news.com February 1, 2024

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

Venus is known as the hottest planet in the Solar System, which is why the Romans called it the Morning Star. Photo: Nasa

JAKARTA – Venus is the second planet from the Sun and the closest planet to Earth. This planet is similar in size and mass to Earth, so it is often referred to as “Earth’s twin”.

However, behind these similarities, Venus holds many interesting facts that not many people know.

Here are 7 interesting facts about Venus:

1. Hottest Planet in the Solar System

Venus is a very hot planet even though it is not close to the Sun. This is because Venus’s dense atmosphere contains around 96.5 percent carbon dioxide gas.

These gases act like a blanket that traps heat from the Sun and makes the temperature on the surface of Venus very high, reaching around 462 degrees Celsius.

2. Venus’ rotation is longer than its revolution

One Venusian day (its rotation period) takes 243 Earth days, even longer than a Venusian year (its revolution period), which only takes 225 Earth days.

Additionally, because Venus rotates very slowly, sunrise to sunset takes about 117 Earth days. What’s more interesting, on Venus, the sun will rise in the west and set in the east, the opposite of Earth.

3. The Sun Rises in the West and Sets in the East

Unlike Earth, Venus actually rotates in the opposite direction to the Sun, this is called retrograde rotation. This means, on Venus, the Sun rises in the west and sets in the east.

One possibility of this happening is due to a collision with an asteroid or other celestial body in the past which changed the direction of Venus’ rotation.

2024-02-01 00:30:39
#Interesting #Facts #Venus #Hottest #Planet #Morning #Star

February 1, 2024 0 comments

Technology

Water in the Early Solar System: Iron Meteorites Rich in Information

by Chief editor of world-today-news.com January 17, 2024

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

The researchers relied on analyzing the chemical composition of “iron meteorites”, which represent rich stores of information about the first period of the history of the solar system.

Iron meteorites are rich stores of information
Courtesy of D. Grewal Enlarge image What is the source of ground water? Where did he come from? How was he raised? These questions have long been controversial among scientists trying to understand the ancient environments in which planetesimals formed.

The most accepted theory among scientists is that water reached Earth from the outer reaches of the solar system with comets, after their construction was completed several billion years ago.

But a research team led by the University of Arizona opposed this theory, according to study Recently published by the journal Nature Astronomy.

He says Damanveer Grewal“Current theories hold that the building blocks of planets arose from dry materials, and water was delivered to them during the final stages of planet formation, but our study shows that water was present from the beginning in The building blocks of planets.

The origin of the Earth

4.56 billion years ago, our Sun was a young star, and our current solar system was just a disk of rocky dust and gas. Over tens of millions of years, small pebbles of dust gathered together, like a snowball rolling larger and larger, to form “mini-asteroids” about a kilometer in size. They are the basic building blocks of Earth and other inner planets.

These planetesimals were the basic building blocks that came together in a subsequent epoch, from which the Earth and other inner planets were formed. Scientists can now observe these protoplanets; The iron meteorites that fell to Earth represent the remains of the cores of the first planetesimals that formed in the solar system.

Damanvir Grewal is an assistant professor in the School of Earth and Space Exploration at the University of Arizona
D. Grewal
Enlarge image

Grewal said in statements to Nature Middle East: By analyzing the chemical composition of these meteorites, we knew that they contained water in that first period of the formation of our planet.

Grewal adds: We examined the proportions of iron, copper, and nickel in those meteorites, which helped us determine the amount of “oxidized iron,” and given that iron can only be oxidized in the presence of water, this proved the presence of water indirectly in the first building blocks. For planet Earth.

The first molecules of life

Observations of water at this very early period in Earth’s history indicate the possibility of organic compounds containing elements such as carbon and nitrogen, which are essential for the origin of life.

Comments Paul Asimo Iron meteorites have been somewhat neglected by the planetary formation community, but they represent rich stores of information about the early period of History of the solar system.

He adds: The difference between what we measured in meteorites in the inner solar system and what we expected means the presence of oxygen activity about 10 thousand times higher.

Grewal says: This opens the door towards building a different vision of the distant history of planet Earth. If water was present in the first building blocks of our planet, it is likely that other important elements such as carbon and nitrogen would also be present, and the components of life may have been present in the seeds of rocky planets since the beginning.

January 17, 2024 0 comments

Technology

The Catastrophic Effects of Earth Stopping Its Rotation

by Chief editor of world-today-news.com January 17, 2024

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

Many questions are raised by some about what would happen if the Earth stopped rotating? Although the Earth is always rotating, we cannot feel it, but if it suddenly stopped rotating, that would be catastrophic, according to what was reported by the “Space” website.

What would happen if the Earth stopped rotating?

Almost everyone and everything not connected to the planet is expected to continue moving at the current speed Earth’s rotationabout 1,000 miles per hour as fast as possible, which is along the equator, so Andrew Leyden, a professor of physics and astronomy at Bowling Green State University in Ohio, answered the question: What would happen if the Earth stopped rotating?: “The only parts of our planet that “Probably the least affected will be at or near the poles, which rotate little or not at all.”

This could lead to tsunamis and earthquakes, so things would be very bad for the entire Earth, but if the Earth gradually slowed down and stopped, life would still change radically, as Andrew explained, and that would change the weather condition dramatically due to the influence of the strong rotation.

How effective is the Earth’s magnetic field?

Scientists believe that the Earth’s magnetic field, which protects us from harmful radiation from space, is linked to the flow of liquid metal in the outer core of our planet, which generates electric currents and a magnetic field resulting from the Earth’s rotation, according to Leiden: “Some researchers believe that the loss of Mars’ magnetic field in… The past contributed to the planet becoming uninhabitable.”

Scientists believe that it is unlikely to stop Planet Earth About rotation. Since the solar system formed from a huge disk of debris around the budding sun, the matter that made up the solar system was also rotating. That’s why most of the planets in the solar system rotate in the same direction.

January 17, 2024 0 comments

Health

The Importance of Earth’s Rotation: What You Need to Know for Geography Class

by Chief editor of world-today-news.com December 25, 2023

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

CNN Indonesia

Monday, 25 Dec 2023 07:00 WIB

Illustration. Planet Earth always rotates on its axis. So, do you know why the planet Earth rotates and what is evidence of the Earth’s rotation? (iStockphoto/Robin_Hoood)

Jakarta, CNN Indonesia —

Why planet earth Spinning is a question that is often asked by students in lessons Geography at school.

Planet The earth rotates on its axis, which is an imaginary line that connects the north pole and the south pole. For more details, see the following explanation.

Why does planet Earth rotate?

Planet Earth rotates due to the gravitational process between the sun and Earth attracting each other.

Quoted from Geography Class X High School Learning Module Ministry of Education and Culture (2020), The Earth rotates on its axis and moves around the Sun at an inclination of 23.5 degrees.

The Earth rotates on its axis from west to east. The time required for one rotation is 23 hours 56 minutes 4.09 seconds or one day.

When the Earth rotates, part of the surface will be exposed to the Sun and others will not. We know this event day and night.

Areas exposed to sunlight will experience day, while areas not exposed to sunlight will experience night.

Events resulting from the rotation of the Earth

Illustration. Events resulting from the rotation or rotation of the earth. (iStockphoto/Elen11)

The rotation of the Earth on its axis can be proven through the following phenomena or events.

1. Daily apparent motion of stars

The rotation of the Earth can make it seem as if we see the Sun moving from east to west around the Earth.

In fact, what actually happens is that the Sun does not move, but the Earth moves around the Sun from west to east.

This non-actual motion is called the apparent daily motion of the stars. It is called apparent daily motion because we can observe it every day or at any time.

2. Happens day and night

As previously explained, the part of the Earth that faces the Sun when rotating on its axis will experience day.

Meanwhile, the part of the Earth facing away from the Sun will experience night. This happens alternately, namely the length of day and night is an average of 12 hours.

However, there are differences in the times of day and night in places far from the equator.

3. There is a time difference

People who are in the east will experience the sunrise and sunset first. Because the Earth rotates from west to east.

Areas that are at an angle of 15 degrees further east will see the sun rise earlier for 1 hour.

This means that if in West Nusa Tenggara, the Sun has already risen, then in Jakarta, people will only see the Sun rising 1 hour later.

4. Difference in gravitational acceleration

The rotation of the Earth produces irregular movements of the liquid metal in the Earth’s core.

This condition results in the Earth’s mass not being distributed evenly and resulting in different gravitational acceleration values in various places in the Earth’s hemisphere.

5. Change in wind direction

Changes in wind direction are also an impact of the Earth’s rotation. Wind moves towards areas of minimal pressure.

This causes a change in wind direction as an effect of the Coriolis force in the wind. In the northern hemisphere the wind will turn to the right.

Conversely, in the Southern Hemisphere the wind will turn to the left. The effect of the Coriolis force also has an impact on several other things on earth, such as changes in the direction of ocean currents.

This is an explanation of why the planet Earth rotates and what events occur due to the Earth’s rotation. Hopefully you learn and hopefully it’s useful!

(south)

2023-12-25 00:00:22
#Planet #Earth #Rotate

December 25, 2023 0 comments

Technology

Earth’s Future: Runaway Global Warming Simulation Reveals Potential ‘Hell on Earth’

by Chief editor of world-today-news.com December 19, 2023

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

“Hell on Earth.” It seems that this saying will become a reality, after the effect of runaway global warming was completely simulated on Earth for the first time, through a recent study that was revealed during the past few hours.

Scientists have for the first time simulated all stages of runaway global warming, and found that our green planet could turn into an uninhabitable “hell” in the coming centuries.

“Earth would only need to warm by a few tens of degrees to trigger runaway global warming, making it as uninhabitable as Venus, a planet with an average surface temperature of about 464 degrees Celsius (867 degrees Fahrenheit),” according to NASA.

According to scientists at the University of Geneva (UNIGE), who conducted the study, with support from the French CNRS laboratories in Paris and Bordeaux, the greenhouse effect is the process by which some gases in the Earth’s atmosphere trap the sun’s heat.

A shocking study on the impact of global warming on planet Earth

The runaway greenhouse effect was examined in the study, which confirmed that it occurs when increased solar radiation leads to a significant and increasing rise in the planet’s temperature.

According to the study published in the Journal of Astronomy and Astrophysics, the research was designed in part to provide a tool for studying the climate on other planets, particularly so-called exoplanets that orbit stars other than the Sun, and to help determine their ability to host life.

It also highlighted the risks to the Earth’s climate in the coming centuries.

Will Earth turn into a planet uninhabitable for life?

Scientists have made a comparison about the difference between Earth, a brilliant blue-green dot covered in oceans and life, and Venus, a sterile sulfur planet, which is the hottest in our solar system.

The study confirmed that a very small increase in solar radiation would lead to an increase in global Earth’s temperature of only a few tens of degrees, which would be enough to trigger this wild and irreversible process on Earth and make our planet uninhabitable like Venus.

December 19, 2023 0 comments

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