On average, Martian time ticks roughly 477 millionths of a second faster than terrestrial clocks per Earth day. But the Red ...

The Northern Hemisphere is tilting away from the sun and will reach the point of maximum tilt in the coming week meaning the ...

When is winter? Weather forecasters in the Northern Hemisphere will tell you Dec. 1 through the end of February, which is ...

The winter solstice marks the shortest day and longest night of the year in the Northern Hemisphere before days gradually get ...

Earth is not a still point in space, but a planet hurtling through the cosmos at incredible speeds. This video breaks down the complex layers of our motion: the 66,000 mph orbit around the sun, the ...

A massive new sunspot complex, dubbed AR 4294-4296, has emerged on the sun and is facing directly at Earth. The dark patch is ...

Sunsets will start getting later before the winter solstice — but mornings keep getting darker. Here’s the surprising science ...

Slow orbital changes caused pulses in Earth's oxygen cycle 500 million years ago, which spurred explosions of animal life.

"This work shows without a doubt that Parker Solar Probe is diving deep with every orbit into the region where the solar wind is born." ...

The mystifying 3I/ATLAS interstellar comet is blazing toward Earth and will in a matter of days come as close to our planet ...

Earth’s path around the Sun is not a fixed racetrack but a slowly shifting orbit, and those subtle changes have a long history of reshaping the planet’s climate. As astronomers refine how these ...

Astronomers have produced the first continuous, two-dimensional maps of the outer edge of the sun's atmosphere, a shifting, ...