Tereza Pultarova

A satellite's view from above fills the gaps in our understanding of the grim realities of war and makes it harder for totalitarian regimes to hide their crimes. But challenges exist.

A team of researchers just chased a pair of reentering satellites in a private jet to learn about the pollution caused by space debris burning up in Earth's atmosphere.

Sun-reflecting space mirrors proposed by U.S. startup Reflect Orbital will have an even more devastating effect on the night sky around the world than previously thought, a study has found.

We need rules to prevent space companies from dumping their old rockets onto the moon's surface in the future, experts say.

Operating a million or more data centers in space would mean a massive increase in air pollution from rocket launches and concentrations of toxic ash from reentering satellites.

The U.S. Federal Communications Commission (FCC) can single-handedly approve space projects that will change the night sky around the world. The international community can do very little against it.

A bright Saturn's ring of satellites will encircle Earth if plans to launch a million orbiting data centers and tens of thousands of space mirrors will come to pass.

SpaceX's Starlink satellites made over 355,000 collision avoidance maneuvers over the past year with each satellite now dodging other objects almost weekly.

"The debris in geosynchronous orbit is a potential minefield."

A new dog collar with GPS tracking enabled by SpaceX's Starlink direct-to-mobile network promises connectivity from almost anywhere.

A constellation of cubesats fitted with special detectors could sniff out nuclear weapons hidden on satellites launched by adversary nations, a new study suggests.

The American Earth-observation company Vantor is now mapping Earth from space in 3D, and the images are stunning.

A superconducting-magnet device that could someday propel spacecraft using just the power of the sun has completed its first orbital tests.

If the number of satellites in Earth's orbit exceeds 100,000, humanity may lose its ability to study the universe from the planet's surface. Some companies want to put millions into space.

For the first time, an experimental satellite has mapped the scale of GPS jamming across Europe and the Middle East from space.

The space industry's plans to launch millions of satellites worry scientists as the rise in high-altitude air pollution threatens to alter Earth's climate.

The world's first space-based neutrino detector launched to space this month to study elusive neutrino particles that constantly bombard Earth.

The human heart shrivels away in space, but researchers have found that mini-hearts grown from human stem cells sprout in space significantly faster than in labs on Earth.

AI algorithms can sharpen naturally blurry images taken by ground-based telescopes, revealing details otherwise visible only to space-borne machines like Webb and Hubble.

"In the inner corona, a region very difficult to observe, we saw slow solar wind gusts moving three to four times faster than expected."

A crew of tiny worms will spend six months aboard the International Space Station, helping researchers better understand how long-term spaceflight affects human astronauts.

Artificial lights at night brightened up planet Earth by 16% from 2014 to 2022, a new study using satellite images has found.

Sperm struggles to find its way to an egg in microgravity, suggesting mammalian reproduction in space may not be possible.

Proposed constellations of orbiting mirrors and data centers would completely destroy the night sky as humanity has known it for millions of years, experts say.