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Apollo 8 Earthrise photo Christmas Eve 1968

Astronaut William Anders took this iconic photo of Earthrise on the 4th orbit of the moon aboard Apollo 8 on December 24, 1968.

Deborah Byrd

Kelly Kizer Whitt

December 24, 2025

Solar wind ‘U-turn’ spotted by Parker Solar Probe

NASA's Parker Solar Probe images have revealed solar material blasted out from the sun returning to our star, rather than escaping as solar wind.

EarthSky Voices

December 23, 2025

See the top 10 stories of 2025 from EarthSky

Here are the top 10 stories of 2025. An interstellar comet visited us, cameras captured a meteorite strike and an earthquake, and much more!

Kelly Kizer Whitt

December 23, 2025

Earth’s atmosphere sheds onto the moon!

Researchers found Earth's atmosphere sheds onto the lunar surface thanks to the solar wind stripping particles, which then spiral along magnetic field lines.

Kelly Kizer Whitt

December 21, 2025

Solstices and equinoxes seen from space

See how sunlight falls on Earth's surface during the solstices and equinoxes, and get a better understanding of why Earth's tilt causes the seasons.

Editors of EarthSky

December 21, 2025

Interstellar object Comet 3I/ATLAS leaving the solar system

Interstellar object Comet 3I/ATLAS makes it closest pass by Earth today (December 19, 2025). How close will it come? And where will it go after this?

Editors of EarthSky

December 19, 2025

Weird, ultra-hot, double-tailed planet surprises scientists

WASP-121 b is a scorching double-tailed planet. Helium gas is escaping from its atmosphere and forming 2 huge tails along its orbit.

Paul Scott Anderson

December 17, 2025

Researchers question methane atmosphere on TRAPPIST-1e

Previous hints of a methane atmosphere on TRAPPIST-1e might not be accurate, a new paper suggests. But the tantalizing exoplanet could still have an atmosphere.

Paul Scott Anderson

December 17, 2025