Mysterious boost to Earth's spin will make Aug. 5 one of the shortest days on record
A strange shift in Earth's rotation is making our days milliseconds shorter — and scientists are racing to understand why.
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Jamie Carter
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15 expert-checked places to see the 2026 total solar eclipse in Spain, Iceland and Greenland
From Arctic fjords and volcanic craters to medieval castles and coastal cliffs, here's where to get a clear line of sight to the total solar eclipse on Aug. 12, 2026.
New interstellar object 3I/ATLAS: Everything we know about the rare cosmic visitor
How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here are all of your questions answered.
10 of the best stargazing locations in North America
Here's where to find very dark skies in the U.S. and Canada.
When is the next 'blood moon' total lunar eclipse visible from North America?
The total lunar eclipse on Sept. 7, 2025, won't be visible from North America, but it's only a 177-day wait until another 'blood moon.'
February's 'rare planetary alignment' is coming — here's what to expect from the planet parade
Mercury, Venus, Neptune, Saturn, Uranus and Jupiter will appear together shortly after sunset on Feb. 28 — but is this the "planet parade" we've been waiting for?
Amateur astronomers capture groundbreaking photos of sun's corona during partial solar eclipse
"Most people just dismiss partial eclipses. But I wanted to go to this partial eclipse to try to get the corona — and I did it! This has opened the door to new dreams and challenges."
Total lunar eclipse September 2025: When and where to see the 'Blood Moon' lunar eclipse
The second total lunar eclipse of 2025 will be visible from Asia and western Australia on Sept. 7-8, 2025.
Total lunar eclipse March 2025: When and where to see the next 'Blood Moon' lunar eclipse
A total lunar eclipse will be seen across North America on the night of March 13-14, 2025, while parts of Europe will get a brief view.
Eclipse experts' best travel tips for the total solar eclipse 2027
Find expert weather insights and travel advice in this essential guide to the 2027 total solar eclipse in Spain, Egypt and North Africa.