Elon Musk, on Falcon Heavy’s triumphant launch

Follow Musk's description of the successful launch of the Falcon Heavy lift vehicle, which will give the U.S. a capability in space not seen since the Saturn V rockets of the Apollo era.

Humans witnessed fire-covered Earth at end of Ice Age

New research suggests that some 12,800 years ago, an astonishing 10 percent of the Earth’s land surface was consumed by fires, thanks to a cosmic impact.

James Webb Telescope arrives in California

The James Webb Telescope's 2 component halves had been undergoing testing in Houston. They're now at Northrop Grumman Aerospace Systems in California, about to be assembled.

Contrasting crescents

A comparative look at 2 crescent moons - Saturn’s icy moon Rhea and largest moon Titan - taken by the Cassini spacecraft.

Why no full moon in February 2018?

January and March 2018 have 2 full moons. February has none. Astronomer David Chapman explains moon cycles and calendars, with a word about moon names in the indigenous Mi'kmaw nation of Canada's northern woodlands.

TRAPPIST-1 worlds likely terrestrial and water-rich

Terrestrial means more like Earth than Jupiter or Saturn. Water-rich means a potential for life. New insights about the 7 planets orbiting the nearby star TRAPPIST-1.

Moon and planets before sunup February 7 to 9

Over the next several mornings - February 7 to 9, 2018 - you'll find the moon moving past the planets Mars and Jupiter.

Watch online as 2 asteroids sweep close this week

How to watch online this week as 2 newly discovered asteroids - 2018 CB and 2018 CC - sweep closer to Earth than the moon.

Volcán de Fuego from Earth and space

Volcán de Fuego - literally "fire volcano" - is one of Central America’s most active volcanos. Photos of its recent eruption here.

Scientists solve a methane puzzle

Since 2006, levels of heat-trapping methane in Earth's atmosphere have risen sharply. A new study settles a disagreement about the source.