Spacecraft burn tons of fuel and leave behind debris—but a clever technique called aerobraking could fix both problems.

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

Billions of years from now, the Sun will swell into a red giant, swallowing Mercury, Venus, and Earth. But that’s not the ...

A recently discovered celestial body is rewriting our knowledge of the Kuiper Belt and maybe challenging the existence of the ...

Aerobraking brings a spacecraft from a large, circular orbit into a highly elliptical orbit, into a smaller, more circular one. Moneya/Wikimedia Commons, CC BY-SA The first maneuver to put the ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

Some recent spaceflight spectacles offer hints about what you might see if Kosmos 482 happens to fall through the sky above you.