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link: EarthSky | Updates on your cosmos and world
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Sun
Sun news update: Sun-stuff blast brings severe storms
Earth's geomagnetic field was disturbed to G4 (severe) storm levels overnight following the arrival of a coronal mass ejection from an X (strong) flare.
January 20, 2026
Space
New survey of nearest stars reveals best spots for life
A new survey of nearest stars to the sun - more than 2,000 of them - is helping astronomers determine which ones are the most likely to have habitable planets.
January 20, 2026
Clusters Nebulae Galaxies
Meet the Crab nebula, remnant of an exploding star
The Crab nebula is visible with binoculars or small telescopes. Scan near bright stars in Taurus to spot this expanding stellar remnant.
Astronomy Essentials
Tonight
Visible planets and night sky guide for January
Visible planets and night sky guide. This evening, look for the thin moon. It’ll be especially beautiful during twilight, set against the sunset colors.
Earth
The elephant shrew is a long-snouted speedster
The elephant shrew is a small but clever creature. It survives using speed, memory and keen senses in a world where predators lurk at every turn.
January 19, 2026
Spaceflight
Artemis 2 rocket rollout! We’re poised to go to the moon
NASA rolled out Artemis 2 to Launch Pad 39B on January 17, 2026. The next mission to the moon will launch no earlier than February 6.
Tonight
The best comets of 2026: Here’s what to watch for
What will be the best comets of 2026? Here's a list of those we already know, and keep watching this space for new discoveries!
January 18, 2026
Astronomy Essentials
Space
Here’s what ‘habitable’ means to astronomers
When astronomers say a distant world is 'habitable,' what do they mean? Do they mean humans could live there? Do they mean we've discovered alien life?
January 18, 2026
Earth
See lightning forms from the traditional to bizarre
Beyond bolts, there are many lightning forms that you might see, including red sprites, blue jets and more. Read about them and see examples here.
January 18, 2026
Space
Do aliens and fireflies communicate similarly?
Advanced aliens and fireflies on Earth might communicate in similar ways, by using signals of flashing light, a new theoretical study suggests.
January 16, 2026
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