Weirdly, spaceships have no direct way to gauge their own speed. Luckily, we can use some physics tricks to figure it out.

Lyrid meteors were photographed blazing through Earth's atmosphere on the nights surrounding the April 22 peak.

Observations by the Mars Express orbiter reveal rapid changes on the Red Planet’s surface from windblown volcanic ash ...

A study of 300,000 galaxies confirms that gravity follows Newton's law and deepens the mystery of dark matter.

Rather than slowly condensing over millions of years, the first building blocks of Earth and other planets may have formed ...

The asteroid Apophis will pass close to Earth in 2029 and will be visible without a telescope, revealing unique changes on ...

On Earth, people grip objects to ensure they don't fall. In space, this process changes: When astronauts hold an object ...

The size of waves on alien worlds will depend as much on the characteristics of the liquid as well as the gravity.

For a few moments on April 6, the four Artemis 2 moon astronauts and the three crewmates aboard China's Tiangong space ...

The space rock is expected to make its closest approach at around 848,000 miles from the Earth, according to NASA.

This observation from NASA's Hubble Space Telescope, released on March 23, 2026, gives an unparalleled, detailed look at the ...

The most precise measurement yet shows the Universe is expanding faster than expected, deepening the Hubble tension. The ...