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Dwarf planet Ceres discovered 225 years ago today
Dwarf planet Ceres was discovered by Giuseppe Piazzi on January 1, 1801. That was 225 years ago. It was 1st considered an asteroid.
January 1, 2026
The moon illusion makes the moon look huge!
When you see a large-looking moon low in the sky, does the moon look bigger to you? That's the moon illusion that makes the moon look so big.
January 1, 2026
Deep-sky objects: Small telescope and binocular targets
Deep-sky objects - including bright and dark nebulae, star clusters and distant galaxies - are favorite targets for amateur stargazers.
January 1, 2026
How often do 7 eclipses occur in 365 days?
It's rare to have 7 eclipses in a calendar year. It's less rare to have 7 eclipses in 365 days. There are 7 eclipses in 365 days 29 times in the 21st century!
January 1, 2026
What’s the youngest moon you can see with your eye alone?
It has long been a sport for skywatchers to spot the youngest moon after sunset, with the eye alone. What does it take to see a very young crescent moon?
January 1, 2026
How often are there three eclipses in one month?
We last had three eclipses in one lunar month in 2020. It'll next happen in the year 2029. From 2000-2050, there are 3 eclipses in one lunar month 14 times.
January 1, 2026
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
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
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
No ocean on Titan? New research reveals slushy ice world
Scientists thought there was a global ocean on Titan beneath its icy surface. But a new study says the moon's interior may be more icy and slushy instead.
December 26, 2025
