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Bookmark or Share- Just How Big Is This Place? - NASAdiameter of M&M _____ 1 cm (10-5 km): width of door _____ 1 m (10-3 km) ...
- StarChild: Glossary - NASAA low density cloud of gas and dust in which a star is born. O OORT CLOUD A huge cloud which is thought to surround our solar system and reach over halfway to the nearest star. Comets originate in the Oort Cloud. ORBIT A specific path followed by a planet, satellite, etc. P PARSEC One parsec equals 3.26 light-years. PAYLOAD BAY
- StarChild: Stars - NASAThe little bit of matter that used to be at the center of the star before the supernova will then be either a neutron star or a black hole. Which object it becomes depends on the size of the original star. A star that is 1.5 to 4 times larger than our Sun will become a neutron star. Stars that are even bigger than that will become black holes.
- What is the biggest star we know? - NASANICMOS' infrared vision can penetrate the dust to reveal the star. The star has enough raw power to blow off two expanding shells of gas (which are false-colored magenta) equal to the mass of several times our Sun. The largest shell is so big (4 light-years) it would stretch nearly all the way from our Sun to the next nearest star. The ...
- StarChild: The Universe - NASAScientists believe that about 13.7 billion years ago, a powerful explosion called the Big Bang happened. This powerful explosion set the universe into motion and this motion continues today. Scientists are not yet sure if the motion will stop, change direction, or keep going forever. Sing me part of a song about the Doppler Shift!
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