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Astronomy

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  • Nobody knows exactly where this probe is nowadays. NASA lost contact with it in 2003, ending a 30-year mission. But there's a milestone here, it's now the furthest derelict man-made object.

    Where Is Pioneer 10 Now?

    Where Is Pioneer 10 Now?

    by Jason Ponic1

  • The Earth has an exceptionally large moon compared to the size of other planets' moons. Start exploring the celestial sphere by observing our beautiful natural satellite.

    Astronomy for Beginners: Observing the Moon

    Astronomy for Beginners: Observing the Moon

    by Marco0

  • Why is the sky at night dark if stars are everywhere? Read on to find out the surprising answer!

    What Is Obler's Paradox?

    What Is Obler's Paradox?

    by Leonard Kelley3

  • The first of four basic guides to the night sky, and what can be seen with the naked eye or binoculars. This page identifies the many kinds of objects you can see when you look up at the night sky

    Astronomy—A Beginner's Guide to the Night Sky

    Astronomy—A Beginner's Guide to the Night Sky

    by Greensleeves Hubs32

  • This is the third page in a series of guides for anyone who wants to learn a little more about our night sky. This page looks at those most numerous of all objects visible in the night sky - the stars

    Astronomy—A Beginner's Guide to the Stars

    Astronomy—A Beginner's Guide to the Stars

    by Greensleeves Hubs10

  • Most of us expect galaxies to be filled with the light of thousands of millions of stars, but another type of galaxy is thought to exist – one that contains hardly any stars at all.

    The Mystery Within Dark Galaxies

    The Mystery Within Dark Galaxies

    by ianzonja0

  • This is a basic guide to what you can see on the surface on the Moon - there is as much that can be seen on the Moon with a pair of binoculars, than in the whole of the rest of the sky put together.

    Astronomy - A Beginner's Guide to the Moon

    Astronomy - A Beginner's Guide to the Moon

    by Greensleeves Hubs15

  • This article summarizes the threat that asteroids and comets pose to the Earth. A short history of some of the greatest asteroid impacts on Earth is also provided.

    Will an Asteroid Strike Planet Earth?

    Will an Asteroid Strike Planet Earth?

    by Kelley43

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