The Hubble Deep Field
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STScI
The Universe Today
The Universe today is very different from the Universe of the past and of the future. We can learn much about the past and the future from what we can currently observe. The Universe today is filled with structure and behavior that is beautiful and puzzling.
There is a very well organized Large Scale Structure apparent in the Universe that both excites and confuses Astrophysicists.
The Universe is also not static, in fact we live in an Expanding Universe.
Additionally, the entire Universe is filled by The Cosmic Microwave Background Radiation which gives many clues as to the origen of the Universe.
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In the 1960's, the United States launched some satellites to look for very high energy light, called Gamma Rays. Gamma Rays are produced whenever a nuclear bomb explodes. The satellites found many bursts
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During the early 1900's, which is not very long ago, astronomers were unaware that there were other galaxies outside our own Milky Way Galaxy. When they saw a small fuzzy patch in the sky through their
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Neutron Stars are the end point of a massive star's life. When a really massive star runs out of nuclear fuel in its core the core begins to collapse under gravity. When the core collapses the entire star
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Spiral galaxies may remind you of a pinwheel. They are rotating disks of mostly hydrogen gas, dust and stars. Through a telescope or binoculars, the bright nucleus of the galaxy may be visible but the
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When stars like our own sun die they will become white dwarfs. As a star like our sun is running out of fuel in its core it begins to bloat into a red giant. This will happen to our sun in 5 Billion years.
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What's in a Name: Arabic for "head of the demon" Claim to Fame: Represents Medusa's eye in Perseus. A special variable star that "winks" every 3 days. Type of Star: Blue-white Main Sequence Star, and
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What's in a Name: Nicknamed the "Pup" because it is the companion to Sirius, "the Dog Star" Claim to Fame: Highly compressed white dwarf remnant. Density about 50,000 times that of water. It has approximately
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