One summer night in 1877, American astronomer Asaph Hall was looking through his telescope in Washington, D.C. Mars was at its closest point to Earth in its orbit, and Hall had one question on his ...

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For over four billion years, the Moon has been orbiting Earth — but where did it come from? The Moon has been a constant ...

Earth lives in a shooting gallery, with small and large rocky bodies in abundance in our solar system. Are we in danger of ...

At some 887 pages, the legislation is a sprawling collection of tax breaks, spending cuts and other Republican priorities, ...

It spawned a cottage industry of conspiratorial books, credulous late-night radio interviews, questionable websites and even the big-budget (if disastrously confused) 2000 movie Mission to Mars.

Odds of ‘city killer’ asteroid 2024 YR4 striking Moon increase - It would be one of largest asteroids in recent history to hit lunar surface ...

At some 940-pages, the legislation is a sprawling collection of tax breaks, spending cuts and other Republican priorities, ...

Scientists Uncover Source of Moon’s Mysterious Magnetism, Links It to a Violent Collision The Moon is often known as an inactive planet. But for all its calm, it still holds secrets that have ...

In a world obsessed with the apocalyptic hellfire of ‘carbon’ and the terror of an imperceptibly warmer climate nowhere near ...

At some 940-pages, the legislation is a sprawling collection of tax breaks, spending cuts and other Republican priorities, ...

The interior of the sun is threaded with huge ropes and tubes of magnetic fields, loaded with very hot plasma—gas so hot its ...