The test validated JUICE's RIME radar, which will explore Europa, Ganymede, and Callisto for signs of life under their frozen ...

What does it take to demonstrate a radar system is ready to look through the frozen crust of a distant moon when the ultimate ...

Harvard's Avi Loeb suggests comet 3I/ATLAS could be alien tech, but most scientists say it's a natural interstellar object with no threat to Earth.

A quiet but consequential race is unfolding across Europe. The goal: orbital autonomy. As access to satellite infrastructure becomes a national security issue and economic imperative, a new cohort of ...

During a solar eclipse, astronomers who study heliophysics are able to study the sun's corona—its outer atmosphere—in ways ...

USSF-106 mission launches a navigation satellite for the U.S. Space Force, flanked by six other commercial and international ...

Scientists are exploring various proposals to repurpose existing spacecraft in order to chase after the interstellar object ...

In early 2004, the Hubble Space Telescope (which turned 30 this year) gained iconic status by giving us the Hubble Ultra Deep Field (HUDF): a window into the early cosmos showcasing 10,000 of galaxies ...

Over 20 years ago, the Hubble Space Telescope looked at a little patch of sky for days, with this methodical approach ...

The United States and China aren't the only powerful, wealthy nations in the world, and they're certainly not the only ...

In a spectacular image captured by the Hubble Space Telescope, the spiral galaxy NGC 1309 glows with cosmic elegance and hides a strange survivor.

NASA’s Europa Clipper spacecraft just aced a key radar test while flying past Mars, proving its ability to detect structures ...