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.

What is a micromoon? The last on 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.

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.

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.

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?

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?

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.

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.

Moon base update! NASA unveils next steps

NASA has unveiled exciting new plans for its moon base, including timelines and details of hopping drones, landers and vehicles.

Virgo the Maiden represents a harvest goddess

Virgo the Maiden is the largest of the zodiac constellations. It's large and faint, but its brightest star Spica is easy to find.