Most stars are primarily made out of the element hydrogen. The second most common element in stars is helium. Stars produce helium from hydrogen in a...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your ...
This type of research, Benneke said, is leading toward a final goal of ''being able to study the earth-like planets. '' ''We are not quite there yet. '' he said, ''but this is really exciting. ''【小题1】What can we learn about K2-18b?A.It is a planet closest to the sun...
SPACE: THE FINAL FRONTIER"Are we alone? What's out there?" People have always looked up at the stars and wondered about space. Today, scientists design vehicles ' to carry astronauts into space to make important discoveries.Space exploration has come a long way, and we now hope to discover...
In particular, the C/O ratio is proposed to be a key determinant of the composition of solids that condense from disk gas and are incorporated into planets. Also, planets may leave chemical signatures on the photospheres of their host stars by sequestering heavy elements, or by being accreted...
Spiral galaxies are made of stars, planets, moons, asteroids, comets, black holes, dust, gas, and any other type of stellar object found in any...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tough ...
All the gas planets, including Jupiter and Neptune, have rings of dust. Jupiter's and Neptune's rings are not as big as those of Saturn and Uranus. 4 A planet does not have to have an atmosphere, but all the planets in our solar system have an atmosphere, either toxic or friendly, ...
The universe is very big. What is the universe made of? A. stars and planets B. gas and dust C. matter and energy D. water and air 相关知识点: 试题来源: 解析 C。宇宙是由物质和能量组成的,“matter and energy”是“物质和能量”。“stars and planets”是“星星和行星”,“gas and dus...
SPACE: THE FINAL FRONTIER “Are we alone? What’s out there?” Looking up at the stars, people have always wanted to learn more about space, and scientists work hard to find answers. They make vehicles to carry brave people into space to find out the secrets of the universe. Apollo 11...
What are the inner planets made of? How was Ceres formed? What does the name Eris mean? The Earth's atmosphere is mostly composed of which two gases? Is Eris an extrasolar planet? Do gas planets have an atmosphere? Do all terrestrial planets have an atmosphere?
” Looking up at the stars, people have always wanted to learn more about space, and scientists work hard to find answers. They make vehicles to carry brave people into space to find out the secrets of the universe.They also real...