Space & Physics

The question of whether aliens can detect our modern civilization depends on what signs they’re looking for—and, crucially, their distance from us

The overly sterile environment of the International Space Station is missing important microbes, a new detailed map shows. If we want to live off Earth, we may need to take more of our bacterial friends with us

A nearly century-old offshoot of Einstein’s general theory of relativity may hold promise for solving the mysteries of dark matter, dark energy and more

Intuitive Machines’ Athena lander is planned to touch down near the moon's south pole on or around March 6

Scientists studying a centuries-old mystery of physics suggest two “arrows of time” control the evolution of quantum systems

Several companies have contracts with NASA to design private space habitats to replace the International Space Station once it’s gone

We look back on about 11 years of the Gaia spacecraft, now at the end of its mission to create the best map of the Milky Way.

With radio and infrared telescopes, astronomers can pierce the dusty veil of our galaxy and map its farthest reaches

With its ‘topological’ quantum computers, Microsoft aims to reach useful scales faster than competing technologies

Asteroid 2024 YR4’s risk of hitting Earth is shifting with new data, astronomers say

Space scientists within NASA and outside it feel betrayed by the Trump administration’s changes at the agency, which was known for promoting inclusion in science

Proposed U.S. space defenses against hypersonic nuclear missiles are unnecessary, impractical and would trigger a dangerous new arms race