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Can a single season have only 2 full moons?
We know it's possible to squeeze 4 full moons into a single season. But can a season have just 2 full moons? Turns out it can, but it is rare.
May 31, 2026
Deneb is an incredibly distant star. But how do we know?
The star Deneb - part of the Summer Triangle - is one of the most distant stars you can see with your eye alone. But why don't we know its distance precisely?
May 31, 2026
How cities can change the weather during storms
Researchers looked at 22 years of data to discover how cities can change the weather. Certain storms intensify over cities, leading to more urban flooding.
May 31, 2026
What is a micromoon? The last one for 2026 is in June
What is a micromoon? It's a full or new moon near its farthest from Earth for the month. Depending on your definition, 2026 has either 2 or 3 full micromoons.
May 31, 2026
Arcturus, brightest star of the northern sky
Arcturus is the brightest star in the northern half of the sky. It's easy to find in spring in the Northern Hemisphere near the handle of the Big Dipper.
May 29, 2026
The 1919 solar eclipse that proved Einstein right
During a May 29, 1919, solar eclipse, astronomers saw the sun bend starlight, proving Einstein's general relativity and catapulting him to rock star fame.
May 29, 2026
Strange sonic boom rattles South Carolina
People in South Carolina heard a strange sonic boom on May 28, 2026, around 5:30 p.m. The USGS said it wasn't an earthquake. Could it have been a meteor?
May 28, 2026
An undersea volcano is erupting in the South Pacific
An undersea volcano began erupting in the Bismarck Sea off the coast of Papua New Guinea on May 8, and it is still going. Will the volcano birth a new island?
May 28, 2026
Do Europa’s water vapor plumes not exist after all?
New observations from the Hubble Space Telescope suggest that Europa's water vapor plumes are less likely than previously thought. But they don't rule them out.
May 28, 2026
Meet Mimosa, a star of the Southern Cross
Mimosa is the 2nd-brightest star in Crux, the Southern Cross. It's circumpolar - up all night - from much of the Southern Hemisphere.
May 28, 2026
