Spacecraft

Astronomers have found high-altitude clouds formed from quartz crystals on the gas-giant world WASP-17b

Thirty years ago, astronomer Carl Sagan convinced NASA to turn a passing space probe’s instruments on Earth to look for life — with results that still reverberate today

Images from each and every spacecraft now orbiting Mars have ruled out a meteorite strike as the cause of a 4.7-magnitude marsquake, the strongest temblor ever detected beyond Earth

NASA’s Psyche mission is on its way to a heavy-metal asteroid of the same name—a type of object that scientists have never seen up close before

OSIRIS-REx’s treasure trove from asteroid Bennu includes material rich in water and carbon

Slow-moving stars at the Milky Way’s outskirts suggest our galaxy may be far lighter than previously believed, with profound implications for dark matter

For the third time in a year, coolant is leaking from a Russian module aboard the International Space Station

The European Space Agency says a software patch restored stability to its cosmos-mapping Euclid spacecraft — but slower operations could extend the mission

NASA’s Perseverance rover has collected valuable samples, but a new report says the plan to fetch them is unworkable

NASA has reversed course on plans to curtail the New Horizons spacecraft’s planetary science studies following a rebellion among the mission’s leaders

At times, the enormous BlueWalker 3 telecommunications satellite is brighter than some of the most iconic stars visible from Earth

Black holes in the extraordinarily distant cosmos are out of tune with their host galaxies, offering insights into their formation