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Strange stacked stones spotted on Mars | Space photo of the day for May 21, 2026
NASA's Perseverance Mars rover has stumbled across an unusual sight: a stack of rocks on the Martian surface.
How one disappointing night changed the way I plan my astrotourism adventures
With May's new moon fading and summer twilight looming, now is the time to plan a dark-sky escape — where location, timing and weather all collide.
NASA exoplanet-hunting spacecraft TESS reveals its most complete look at the night sky yet
TESS has released its most complete view of the sky over Earth, revealing the location of 6,000 potential worlds beyond the solar system.
SpaceX will launch its 1st-ever Starship V3 megarocket today. The stakes couldn't be higher
There's a lot riding on the debut flight of SpaceX's Starship V3 megarocket — including some of NASA's lunar ambitions.
The moon shines with a swarm of stars tonight as Jupiter, Venus and Mercury line up nearby
The moon glows with the Beehive Cluster on May 21, as a trio of planets form up in the evening sky.
Aurora forecast May 21-25 - Quiet skies expected through the weekend
The latest aurora forecast for tonight helps you make sure you're in the right place at the right time to see the northern lights.
Space debris is forcing satellites to dodge more often — costing us vital science. 'Things will get worse before they get better'
Satellites forced to avoid space debris appear to have lost some of their data due to the movement. They've also lost precious fuel.
Scientists find a hidden route to the moon that saves fuel
An international team of researchers say they've found a more efficient route from Earth to the moon using advanced computer modeling.
