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Astronomy Essentials
Tonight
Visible planets and night sky guide for December
Visible planets and night sky guide. Watch Deborah Byrd's video find out more about the upcoming Geminid meteor shower. Look for the 3rd quarter moon tonight.
December 11, 2025
Space
Long-lasting gamma-ray burst is a unique puzzle
We now have more insight on the longest gamma-ray burst yet. The burst lasted at least 7 hours, nearly double that of the previous record.
December 11, 2025
Space
There might be an ocean on exoplanet TOI-270 d
Is there an ocean on exoplanet TOI-270 d? A new study said this sub-Neptune exoplanet might be a water world with either a global or nightside ocean.
December 11, 2025
Sun
Sun news: Surprising geomagnetic storm last night
Sun news December 11: A surprise G2 geomagnetic storm lit up the skies with auroras as far south as Oregon and Illinois last night.
December 11, 2025
Space
Did a lost moon of Mars create tides in an ancient lake?
Thin, repeating sedimentary layers examined by the Curiosity rover suggest that a big, lost moon of Mars created tides in the ancient lake of Gale crater.
December 10, 2025
Earth
New fairy lantern plant discovered at popular Malaysian park
Scientists have discovered an exquisite new species of fairy lantern - called Thismia selangorensis - at a park near Kuala Lumpur, Malaysia.
December 10, 2025
Brightest Stars
Schedar shines brightly at the Queen’s heart
Schedar is the brightest star in the distinctive W-shaped northern constellation Cassiopeia and is visible most of the year from northern latitudes.
December 10, 2025
Space
Lightning on Mars? Electric sparks in dust devils confirmed
NASA's Perseverance rover has detected lightning on Mars 55 times. It heard the small electrical discharges with its microphone in dust storms and dust devils.
December 9, 2025
Astronomy Essentials
Thinking of buying a telescope? Read these tips 1st
Are you thinking of buying a telescope? Here's how to know if you're ready, with tips on what 1st-time buyers should look for.
December 9, 2025
Earth
Humpback whales thrive by not being picky eaters
Humpback whales are making a remarkable comeback, thriving in new habitats thanks to conservation efforts and their adaptable feeding habits.
December 8, 2025
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