Stories by Alexandra Witze

Mars becomes the first inner planet after Earth to have its core measured

The NASA spacecraft has also snapped more shots of its surroundings and listened to a Martian wind gust

New studies knock down a controversial report observing phosphine in the planet’s atmosphere

U.S. president-elect also elevates the position to the cabinet for the first time

Scientists seek guidance on exploring frozen caches at the lunar poles responsibly

A new satellite image reveals the damage that shut down the facility, ending an era in astronomical observation

Debate continues over a controversial report of phosphine in the planet’s atmosphere, as researchers reanalyze data and find a fainter signal

The coronavirus pandemic, climate change and space exploration are among the issues that Biden will influence if he wins the upcoming U.S. election

Perseverance will stow away rocks for eventual delivery to Earth and will listen for Martian sounds for the first time

The first fast radio burst detected in our galaxy comes from a magnetized star, and could help to explain these cosmic enigmas

NASA astronaut Jessica Watkins is at the forefront of a new crop of space explorers destined for the moon and maybe one day Mars

NASA’s high-flying SOFIA observatory has struggled to prove its scientific worth

U.S. research sees deep cuts in the president’s request for 2021. But Congress has resisted similar reductions in the past

The Thirty Meter Telescope controversy is forcing scientists to grapple with how their research affects indigenous peoples

Latest launch includes “DarkSat” prototype to minimize reflection from fleets of broadband Internet satellites

NASA’s Mars InSight lander has detected more than 300 quakes and traced some back to their source

The OSIRIS-REx probe will attempt to sample rocks and soil from a crater in the asteroid Bennu’s northern hemisphere

Analysis finds that the planet’s protective shield was in place by at least 3.7 billion years ago, as early life arose

Researchers grapple with the meaning of the first objects entering our solar system from beyond

Meteorologists say international standards for wireless technology could degrade crucial satellite measurements of water vapor

Scientists have spotted signs of water as the object 2I/Borisov streaks toward the sun

Here are five scientific applications that take the navigation system beyond the map

Construction of the Thirty Meter Telescope was supposed to start on July 15

The Thirty Meter Telescope project has faced years of legal challenges over planned Mauna Kea site