The same could also be true of planets and stars, Kratter said. As long as there is enough separation between the stars, she said, it's hard to put an upper limit on how many stars could exist in one system. Konacki agreed with this assessment. "We know about planets in open clust...
Do you know how many planets are there in the solar system? Yes,there are eight. Have you heard about Venus (金星)? It is the second planet from the Sun in the solar system. It is only a little smaller than the Earth. And it has about 95% of the Earth's diameter(直径) and ...
Many stars have planets orbiting around them. Some astronomers think that there may be as many planets as there are stars. This idea suggests that some type of life probably exists on millions of planets. If that life is intelligent, maybe an alien astronomer could tell you how many stars...
A Scientists have many theories about how new planets are born. But they have never seen one actually take shape until now. Astronomers using the European Southern Observatory's Very Large Telescope believe they have spotted a baby planet forming in deep space. “If we are correct, this is ...
How many things can you see in the night sky?A lot!On a clean night you might see the moon,some planets,and thousands of bright stars! You can see even more with a telescope.With better telescope you can see more objects in the sky.And you can see those objects more clearly. ...
Scientists have many theories about how new planets are born. But they have never seen one actually take shape — until now. Astronomers using the European Southern Observatory’s Very Large Telescope believe they have spotted a baby planet forming in deep space. "If we are correct, this is ...
【题目】Scientists have many theories about how newplanets are born. But they have never seen one actually take shape - until now. Astronomers using the European Southern Observatory'sVery Large T elescope believe they have spotted a baby planet forming in deep space. "If weare correct, this...
light,can escape from them.Black holes are thought to be formed by collapsed stars. A supernova is an exploding star. A comet is a bright object with a long tail that travels around the sun. An asteroid is one of the very small planets that move around the sun between Mars and...
【题目】阅读理解How many things can you see in the lightsky? A lot! On a clear night you can see themoon, some planets, and thousands of sparking stars.You can see even more with a telescope. You might see that many stars look larger thanothers. You might see that some stars that ...
Warming up 1. How many planets are there in the solar system? Mercury (水星), Venus (金星), Earth, Mars (火星), Jupiter (木星, Saturn (土星), Uranus (天王星), Neptune (海王星), Pluto (冥王星) My Very Earnest Mother Just Served UN a Pizza ...