Astronomy questions, come on! Solving Astronomy Questions!! Thank you very much!

1.Short-answer questions.

1) If the solar system is swallowed up by a black hole, will humans and animals still be able to live?

A: Humans and animals are dead! Humans and animals can't live!

2) Is there a "second Earth" in space?

A: Logically yes, but rarely, because there is an unusual experience like Earth! (It is the earth that has an unusual experience, so that the earth can have a greater gravitational pull!) -The experience of the Earth is that the Earth collided with its companions at the beginning of its birth.

3) How many years would it take to make a spacecraft of 2 kilometers per second from the solar system to the center of the Milky Way? A: Known:

30,000 light-years from the center of the Milky Way to the Solar System = 284010624000000000 kilometers.

One year = 31,536,000 seconds.

Solution: 284010624000000000 km 2 km = 142005312000000000 seconds.

142005312000000000 seconds 31,536,000 seconds = years.

A: If you do 2 kilometers per second spacecraft from the solar system to the center of the Milky Way, it will take years.

4) Does Mars have water, plants, animals, oceans, and oxygen?

A: There used to be water on the surface of Mars, rivers, and now the water is underground.

There are no plants, no animals, no ocean, no oxygen, but very little.

Carbon dioxide accounts for more than 98%!

It's so hard! ~~

I hope mine will be of great help to you. Thank you!

1 has not been swallowed so far (unsolved mystery).

2 Nothing has been discovered so far (unsolved mystery).

3 haven't tried. 4 haven't been.

1) Can't because our time has stopped.

2) There may be but far from us.

3) 4050000000 years.

4) Water used to exist (the latest discovery on the 16th) and now has no liquid state.

Flora and fauna, now not, before there was no unknown.

Ocean, no.

Oxygen, there is, very little.

You'd rather type out so many words, why don't you research it.

The first A, the second A, the third C, the fourth A, the fifth, I don't know, the sixth B, the seventh, A, the others are not clear.

1 The two poles of the earth's axis, the geographical north and south poles, the spring equinox and autumn equinoxes, the two poles of the earth's axis, the geographical north and south poles, the spring equinox and the autumn equinox.

Geography North and South Poles, Poles of the Earth's Axis, Equinox Equinox, Equinox, Equinox, Equinox, Equinox.

2-day North Pole Yellow North Pole.

3 Huang Longitude 0 90 180 270 No word typed.

Hello, please complete the question so that it is easy to answer.

It has been sent to your message, because it is inconvenient to announce it here, after all, it is an exam question, so it is secretly sent.

On the second floor, in fact, only 12 astronauts set foot on the moon, because Apollo 13 malfunctioned on the way to the moon and was forced to return, and failed to land on the moon.

Question 10, pulsar = neutron star, this kind of star is rotating rapidly, so it emits a pulse signal.

The students in the center said that Zaofan Ling: the location of the earth.

The black and white ball indicates that under the sun, half of the moon sedan collapse ball is bright and half dark.

Fill in the image below.

We found that over the course of a month, the moon would change from a crescent moon, then getting bigger and bigger, to a full moon, then getting smaller and smaller, then becoming a crescent, finally disappearing, and then becoming a crescent again.

I have something to add to the answer upstairs.

1.Wrong (only combined), 2False (Inner), 3

Yes, 4False (westward shift of the equinox), 5False (the relationship between spectral and luminosity), 6

Wrong (New Year), 7Yes, 8False, 9

False (asymmetrical), 10Right.

Above, I hope to be able to help the pro!

1, False 2, False 3, True 4, Not Entirely True, the Vernal Equinox is moving westward 5, I think False 6, False, Yes New Day 7, True 8, False 9, False 10, True.

Unsure and don't know are in parentheses: Wrong Wrong (True) (It's precession and nutation) (Wrong True ()