Mars, the red planet, was a world we knew almost nothing about until our first spacecraft visited it. In just ~50 years, how far we’ve come!
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A next-generation instrument on a delayed rover may be the key to answering the question of life on Mars.
Here in our Solar System, terrestrial bodies get moons from gravitational capture or collisions. The Pluto-Charon system? It was both.
The number of planets that could support life may be far greater than previously thought, a recent discovery suggests.
The record-breaking transmission could revolutionize deep space communication.
Reusable rockets, moon landers, civilian astronauts, and more.
The Universe, although violent, is filled with creation events following destructive ones. 1850 light-years away, both types are unfolding.
In one experiment, the Viking landers added water to Martian soil samples. That might have been a very bad idea.
The first tests of optical communications far from Earth will take place aboard the asteroid-bound Psyche spacecraft
From size to mass to density and more, each world in our Solar System is unique. When we compare them, the results are truly shocking.
Although early Earth was a molten hellscape, once it cooled, life arose almost immediately. That original chain of life remains unbroken.
Sixty years ago, the Soviet Union was way ahead of the USA in the space race. Then one critical event changed everything.
For now, our Solar System’s eight planets are all safe, and relatively stable. Billions of years from now, everything will be different.
Freethink’s weekly countdown of the biggest space news, featuring a stranded space factory, Jeff Bezos’ new moon lander, and more.
The structure of our Solar System has been known for centuries. When we finally started finding exoplanets, they surprised everyone.
Finding life beyond our Solar System requires understanding its host planet.
Newborn stars are surrounded only by a featureless disk. Debris disks persist for hundreds of millions of years. So when do planets form?
The giant impact theory suggests our Moon was formed from proto-Earth getting a Mars-sized strike. An exoplanet system shows it’s plausible.
Until the Apollo missions, we had no idea how the moon got here, just a series of educated guesses. They rewrote the story of the moon’s origins.
We may have discovered alien life already but rejected the evidence too quickly because it seemed false at first glance.
It’s not about fairness. It’s about using every possible advantage.
NASA’s Juno mission, in orbit around Jupiter, occasionally flies past its innermost large moon: Io. The volcanic activity is unbelievable.
Dinosaurs and other beasts were once thought to be the “undisputed masters” of Venus.
Featuring SpaceX’s “Mechazilla,” a first-of-its-kind spacewalk, and more.
Compared to Earth, Mars is small, cold, dry, and lifeless. But 3.4 billion years ago, a killer asteroid caused a Martian megatsunami.
Embedding any leadership philosophy in sports demands a selective and multi-disciplinary approach.
Back in 1970, Sister Mary Jucunda wrote NASA, decrying large investments in science. A former Nazi’s legendary response is still relevant.
In November 1974, astronomers used the radio telescope at Puerto Rico’s Arecibo Observatory to send a hello to the universe.
Looking back on our planet’s early history offers a new (and less crazy) meaning for the idea of a “flat Earth.”