Earth's orbit is getting crowded with junk. And that's becoming a major problem. Starting with Sputnik I in 1957, humanity has sent up nearly 17,000 satellites. Around 11,500 of them are still there, ...

Add Yahoo as a preferred source to see more of our stories on Google. Paul M. Sutter talks about the science behind movies and TV shows set in space. What's Going On With the Knicks? Rookie Awards + ...

Lower gravity. Higher radiation. No ER access. These are just a few of the challenges that humans face in outer space. Emily and Regina talk to a NASA astronaut (and astronaut scientist) about the ...

Morocco now produces more meteorite discoveries than anywhere on Earth, with some Martian and lunar fragments selling for millions of dollars. The government legalized meteorite exports in 2020, ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

Ask ten experts where space begins and you might get ten different answers. The atmosphere doesn’t end like a wall—it thins out gradually, so any “edge” is partly a human decision. That decision ...

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Introductory remarks / Christian Brünner -- Fascination from the beginning of mankind / Alexander Soucek -- Reasons for space activities : some thoughts / Alexander Soucek -- A short chronology of ...