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See the Martian moon Phobos fly over a dust storm
See the Martian moon Phobos as it passes over iconic landscapes on the red planet, including a trio of volcanoes and the largest canyon in the solar system.
December 31, 2025
New Year’s Star Sirius, the moon and Jupiter ring in 2026
Entertain your friends on New Year's Eve by showing them the New Year's Star, the soon-to-be full supermoon and Jupiter. Sirius is highest at midnight.
December 31, 2025
Why does the New Year begin on January 1?
Why does the New Year begin on January 1? The tradition stems from the festival of Janus, the Roman god of past and future.
December 31, 2025
Superkilonova: Double explosion could be first ever seen
Astronomers have detected a strange double explosion of a star and hypothesize that it is a kilonova following a supernova: a superkilonova.
December 30, 2025
The Orion Nebula (M42) is a starry nursery
You can see the Orion Nebula as a fuzzy spot in the sky using just your eyes. It's really a vast cloud in space where new stars are forming. Learn more.
December 30, 2025
NASA’s SPHEREx observatory completes stunning 1st cosmic map
NASA's SPHEREx has produced its 1st cosmic map, revealing the entire sky in 102 colors. Take a look at this spectacular map.
December 28, 2025
Orion the Hunter, the most recognizable constellation
Orion the Hunter may be the most recognizable constellation, visible from both hemispheres. It's best in winter from the north and summer from the south.
December 28, 2025
Strange ‘spider’ on Europa hints at water lurking below
Researchers say that a huge 'spider' on Europa likely formed when a crater-creating impact caused briny water to spill out onto the surface.
December 27, 2025
Earth at perihelion – closest to sun – on January 3
Every year in early January, Earth reaches its closest point to the sun in an event called perihelion. In 2026, it's on January 3.
December 27, 2025
Fledgling seabirds in Hawaii are easy prey for tiger sharks
When seabirds fledge at an atoll in northwestern Hawaii, tiger sharks move in to prey on the fledgling seabirds, disrupting shark populations in the area.
December 26, 2025
