The universe

Watch a colossal X-class solar flare erupt from the sun's highly magnetized 'rule-breaking' sunspot.

Satellite images have revealed the true extent of damage left in the wake of Greece's worst wildfire this year.

July is in the books as yet another record-setting month of extreme heat and weather.

Measuring wind on Mars with great sensitivity is important if we don't want accidents with vehicles, and maybe even astronauts, on the Red Planet.

A private company has received funding from the U.S. government to build the first-ever "streetlights" on the moon — towering, Statue of Liberty-sized structures that could withstand the brutal lunar night.

New research finds why some asteroids have weird, watermelon-shaped moons trapped in orbit around them, contrary to what typical asteroid formation theories predict.

Though magnetars and pulsars are two distinct types of neutron stars, astronomers have spotted a magnetar mimicking a pulsar after launching a mysterious blast of intense radiation.

"We haven't found any evidence for life on Mars, but at least we have identified a place that should, in principle, be able to sustain life."

Commercial airplanes have made strides in reducing carbon emissions, but it turns out the exhaust clouds trailing behind them can have long-term impacts on the environment.

A newly discovered star 30 times as large as the sun has a baffling chemical composition that could provoke a revision to stellar evolution models.