The Solar System

No - the moons in my solar system are not similar in appearance. Most are spherical (if the are big enough) but some, like the 2 moons of Mars, are more potato shaped, since they are not big enough to have enough gravity to form spheres.

The moon orbits the earth about once every month, thus each phase of the moon - full moon, new moon, waning half moon, waxing half moon, etc. - occurs about once each month. It's not exact - the moon takes about 28 days and most months are longer than that by a few days.

B. The young sun's solar winds pushed gases outward to the outer solar system.

Uranus was discovered by William Herschel, a German living in England in 1781. This was the first planet not seen by the naked eye and it's an interesting planet: it might be raining diamonds and it's moons are named for Shakespeare characters!

As far as we know, Earth is the only planet that supports life, but there have been many studies that show that some other planets have either supported life previously or could be capable of supporting life.

You can use kilometers if you like. On the other hand, distances within the Solar System are often quoted in AU (astronomical units), where 1 astronomical unit is the distance from Sun to Earth. Such distances are easier to visualize.

Johannes Kepler produced the model of the solar system that is used today. His work, published in 1609, was based on observations of the planets' positions made by Tycho Brahe using new equipment of higher accuracy than ever before.

Kepler departed from the old models of Ptolemy, Copernicus and Tycho which used circles and epicycles, and hit on the idea of ellpitical orbits for the six known planets. His model showed excellent agreement with the observations, which pleased Kepler but he had no idea why this was so.

About 80 years later Newton's laws of motion and law of gravity were published and he was able to show that an object under the inverse-square law of gravity must follow an elliptical orbit. It was appreciated that the planets must move in their elliptical orbits under the Sun's gravity, and Kepler's model was generally accepted.

The correct answer is we do not know...there is no proof one way or another. No one can find any proof within Isaac's memoires. To categorically say no to the question is as without substance as saying yes he did!

Research results in no reliable information regarding the self-luminosity of any planet in the solar system. Planets do not emit light, they reflect it. If any one of the planets were capable of emitting light, it would most likely be Jupiter which is a bit of a failed star, however there seems to be no data indicating that Jupiter does more than reflect the light of the sun.

Edit: Yes, it's not easy to think what this question is getting at. There's the faint "ashen light" sometimes seen on Venus.

Of course the Earth is slightly luminous because of human activity.

But what I think is the most likely answer is "Jupiter". That planet

emits more energy than it could by just reflecting sunlight. Of course that's total energy including all radiation wavelengths, not just the optical waveband.

The further a planet is from the sun, the less light and heat radiation it gets from the sun leaving it a cooler planet. However, a planet with a gaseous atmosphere is less likely to radiate away the planets heat so it may retain more of the solar heat.

We now know that Mars once had liquid water on its surface and probably had a much denser atmosphere than it does now.

Work, eat, take a nap, play, ...

No. Uranus and Neptune owe their blue color primarily to the presence of methane.

According to those who do not accept the IAU's judgement on such matters - and no one is required to - Pluto.

While Pluto was declared by the IAU to no longer be a planet, many disagreed. They had - and have - that right.

"Planet X" was originally a term for a hypothetical TENTH planet, BEYOND Pluto. Also, Pluto is no longer considered a planet.

Saturn is 1.2 billion km (about 7 AU) from the Earth when the two planets are at their closest.

No alien life has been found so far; either inside or outside our Solar System.

terrestrial

There is not a planet called Evie in the Solar System.

winter. i think?

Yes, that's how it works.

Earth is.

hey

The sun because it's hot and humans turn it into energy

No. Other stars have been found to have planets orbiting them.