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Astronomy 101
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Ömer E.
@BorzC
·
12 February 2019 23:11
Newton pointed out that you can calculate the force of gravity between two objects if you know their mass and their distance apart.
Kitabı okudu
Astronomy 101
Carolyn Collins Petersen
Ömer E.
@BorzC
·
12 February 2019 23:10
Ancient people used the sky as a calendar and a timekeeper.
Kitabı okudu
Astronomy 101
Carolyn Collins Petersen
Reklam
Ömer E.
@BorzC
·
12 February 2019 23:10
Dark energy acts opposite gravity and continues to speed up universal expansion today.
Kitabı okudu
Astronomy 101
Carolyn Collins Petersen
Ömer E.
@BorzC
·
12 February 2019 23:10
The nearest stars are about 4.2 light-years from the Sun.
Kitabı okudu
Astronomy 101
Carolyn Collins Petersen
Ömer E.
@BorzC
·
12 February 2019 23:10
The Milky Way is moving through space at an estimated velocity of 630 kilometers per second.
Kitabı okudu
Astronomy 101
Carolyn Collins Petersen
Ömer E.
@BorzC
·
12 February 2019 23:07
Black holes are massive, dense objects with gravity so strong that nothing—not even light—can get out.
Kitabı okudu
Astronomy 101
Carolyn Collins Petersen
Reklam
Ömer E.
@BorzC
·
12 February 2019 23:07
Astronomers classify stars by their color, which reveals the temperature at the star’s photosphere (the visible “surface”).
Kitabı okudu
Astronomy 101
Carolyn Collins Petersen
Ömer E.
@BorzC
·
12 February 2019 23:07
When a star dies, the material it created is distributed into space and recycled into new generations of stars, planets, and life.
Kitabı okudu
Astronomy 101
Carolyn Collins Petersen
Ömer E.
@BorzC
·
12 February 2019 23:06
The most energetic objects, events, and processes in the universe give off x-rays and gamma rays.
Kitabı okudu
Astronomy 101
Carolyn Collins Petersen
Ömer E.
@BorzC
·
12 February 2019 23:06
Light can act as a particle, called a photon, or it can travel through space as a wave.
Kitabı okudu
Astronomy 101
Carolyn Collins Petersen
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