Q1 plz ans its argent

Q1 plz ans its argent the folloveing 1 . Why does a photograph of 2. What does the Solar Systexxx op. 3. Why is life possible on Eart\+. What is the difference between a Give reasons why l. life is not possible on the Moon. Venus is the hottest planet.

Dear student ,

The question that you have asked, is not covered fully on your image .
but , see if this is your question :
4. what is the difference between a star and planet ?
Ans: Star

A star has its own light.
Stars twinkle at night.
The relative positions of the stars do not undergo any noticeable change.
Since the stars are very far away, the telescope can only make them look brighter but not larger.
A star has very high temperature.
There are billions of stars in the celestial sphere.

Planet

A planet has no light of its own. It shines by reflecting the light of the sun.
Planets do not twinkle.
Since planets are very mush closer to the earth than the stars are, their motion around the sun is noticeable as a daily shifting of their relative positions in the sky.
Most planets on the other hand are near enough to the earth to be magnified by the telescope.
Planets have low temperatures.
There are only nine planets in the solar system.

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An Indian-origin scientist claims to have solved the mystery of how life on earth exactly began about 4 billion years ago after studying three sites containing the world’s oldest fossils.

According to Sankar Chatterjee, a Texas Tech University palaeontologist, meteorite bombardment left large craters on earth that contained water and chemical building blocks for life, which ultimately led to the first organisms.

How life began on earth has baffled humans for millennia.

Dr. Chatterjee, who was born in Kolkata, believes he has found the answer by connecting theories on chemical evolution with evidence related to our planet’s early geology. “This is bigger than finding any dinosaur. This is what we have all searched for — the Holy Grail of science,” he said.

Thanks to regular and heavy comet and meteorite bombardment of earth’s surface during its formative years 4 billion years ago, the large craters left behind not only contained water and the basic chemical building blocks for life, but also became the perfect crucible to concentrate and cook these chemicals to create the first simple organisms. Dr. Chatterjee’s research suggests meteorites can be givers of life as well as takers. He said it was likely that meteor and comet strikes brought the ingredients and created the right conditions for life on our planet.

By studying three sites containing the world’s oldest fossils, he believes he knows how the first single-celled organisms formed in hydrothermal crater basins. “When the earth formed some 4.5 billion years ago, it was a sterile planet inhospitable to living organisms,” Dr. Chatterjee said, going on to add: “It was a seething cauldron of erupting volcanoes, raining meteors and hot, noxious gasses. One billion years later, it was a placid, watery planet teeming with microbial life — the ancestors to all living things.”

Dr. Chatterjee presented his findings at the Annual Meeting of the Geological Society of America in Denver.

venus is the hottest planet.

Venus is the hottest planet even though Mercury is the closest planet to the Sun. The reason that Venus is hotter than Mercury is because it has an atmosphere made of carbon dioxide; it also has clouds of acid inside its atmosphere. This is called greenhouse effect. Mercury, along with many of the other planets, has none of these features. Another feature of Venus is that all sides are always hot. It is full of active volcanoes and rivers of lava. In contrast, the side of Mercury that faces away from the Sun is usually 100 degrees or more below zero.

People often call Venus "Earth’s twin". Why? First, Venus and Earth are almost exactly the same size with Earth being only slightly bigger. Second of all, scientists think that Earth used to be just like Venus having a hot and uninhabitable planet. They think the reason Earth is like it is today is because a large asteroid about half the size of Earth hit Earth. Scientists believe that is what allowed for humans to be able to live on Earth.

Is it really true that Venus is named after the goddess of beauty and love? It seems strange that a planet full of volcanic activity and red as blood (like Mars) would be named after a beautiful goddess. It is even stranger that this goddess is the goddess of beauty and love because the planet has no beauty whatsoever.

Unlike many other planets, Venus doesn’t have any moons. The reason for this is because Venus does not have enough gravity to pull in any large asteroids (moons). The few asteroids that make it that far are rarely large enough to become a moon. Mercury is another planet that doesn’t have moons. Isn’t it strange that the two planets that don’t have any moons are also the two closest planets to the sun?

So is Venus really the hottest planet? Why do people call it "Earth’s Twin"? The answers to these questions should be clearer now. As the facts reflect, Venus is an amazing planet.

planets

Early astronomers were able to tell the difference between planets and stars because planets in our Solar System appear to move in complicated paths across the sky, but stars don't.

That is, if you observe the sky night after night, the stars will all appear in fixed positions with respect to each other. They will rise and set a few minutes earlier each night (an effect that is due to the Earth's motion around the Sun), but otherwise nothing will change. This is why the background stars are sometimes referred to as the "celestial sphere" -- from our point of view, it looks like the stars are "painted" onto a gigantic sphere that surrounds Earth and therefore are unable to move with respect to each other.

Planets, on the other hand, are observed to move in very complicated paths with respect to the background stars, sometimes even appearing to go "against the grain" and reverse their directions. Therefore, they are easily distinguishable from stars if you look at the sky night after night. Although ancient astronomers did not have a correct explanation for this phenomenon, we now know that the complicated motion is just a projection effect -- it is due to the fact that Earth and the other planets are physically moving in orbits around the Sun, so the planets' relative positions as seen from Earth (with respect to the fixed background stars) change as time goes on.

There are other observational differences between planets and stars too, by the way -- such as the fact that planets almost never twinkle. (See the related question on this.)

Q1 plz ans its argent Q1 plz ans its argent the folloveing 1 . Why does a photograph of 2. What does the Solar Systexxx op. 3. Why is life possible on Eart\+. What is the difference between a Give reasons why l. life is not possible on the Moon. Venus is the hottest planet.

Q1 plz ans its argent

Q1 plz ans its argent the folloveing 1 . Why does a photograph of 2. What does the Solar Systexxx op. 3. Why is life possible on Eart\+. What is the difference between a Give reasons why l. life is not possible on the Moon. Venus is the hottest planet.