neologism
发表于 2025-3-26 22:59:33
A Map of the Universen of the planets range are a few hundred miles in diameter. Our sun is almost 1 million miles in diameter. Some red giant stars are large enough that one could fit all the planets up to the orbit of Mars inside them. The largest star we know of is so big that if it were located in the center of the
Vsd168
发表于 2025-3-27 02:36:51
http://reply.papertrans.cn/24/2389/238874/238874_32.png
overwrought
发表于 2025-3-27 05:24:05
The Weight, Shape, and Fate of the Universehese numbers have been measured to better than 1% accuracy. This is a remarkable improvement on the situation 20 years ago when the Hubble constant was not known to better than a factor of 2..Three observations taken together have made this improvement possible. The first is the observation of the v
Grating
发表于 2025-3-27 12:08:08
The Search for Light in the Dark Ages question of where we are in the universe and how we got there has changed dramatically over the centuries. It is a question that all cultures try to answer in one way or another. We begin with a Native American myth and then discuss Greek thought and the idea of rational inquiry. The development of
悲痛
发表于 2025-3-27 15:27:08
http://reply.papertrans.cn/24/2389/238874/238874_35.png
VALID
发表于 2025-3-27 21:24:38
Cosmic Archaeology soon after their formation. These galaxies are so distant that we cannot see them in as much detail as nearby galaxies. We can also learn about the distant past by studying nearby galaxies. We can study the age and chemical composition of their stars and use these to reconstruct the history of thes
一美元
发表于 2025-3-28 01:30:22
Looking Ahead in Wonder: Telescopes at the Cosmic Frontier into basic scientific research which is mainly motivated by curiosity?.The Dutch physicist Hendrik Casimir has argued that innovations originating in fundamental research have a huge impact on the economy. He implies that these innovations would not have happened were it not for basic research.
描绘
发表于 2025-3-28 05:56:11
http://reply.papertrans.cn/24/2389/238874/238874_38.png
Factorable
发表于 2025-3-28 10:01:58
George RheeTeaches the reader what the first stars and galaxies actually look like and how they could form.Provides the latest observational findings on the search for the first stars and galaxies.Explains the a
BOGUS
发表于 2025-3-28 14:12:02
Astronomers‘ Universehttp://image.papertrans.cn/c/image/238874.jpg