Even at its faintest, Venus always outshines every other star and planet that's visible from Earth, and then some!
Do you think you know the Solar System? Here's a fact about each planet that might surprise you when you see it!
We give it the flight plan, and it takes care of the rest. It has to. Here’s why. No matter how advanced our technology becomes, there are certain limits that can […]
Out of the four rocky planets in our Solar System, only Earth presently has plate tectonics. But billions of years ago, Venus had them, too.
If there are human-sized creatures walking around on other planets, would we be able to view them directly?
Scientists have long puzzled over how Mars, a cold and dry planet, was once warm enough to support liquid water.
Our views from the red planet’s surface are more spectacular than ever. Ever since the earliest spaceflight, humanity has reached for Mars. This photo composite shows Meande Ring, a river on […]
While Mars is known as a frozen, red planet today, it has all the evidence we could ask for of a watery past, lasting for approximately the first 1.5 billion […]
Based on the atoms that they're made out of, the innermost planet should always be the densest. Here's why Earth beats Mercury, hands down.
Freethink's weekly countdown of the biggest space news, featuring Starship's second test flight, a new "dark mysteries" telescope, and more.
Sound waves behave quite differently on Mars than on Earth.
The boiling new world, which zips around its star at ultraclose range, is among the lightest exoplanets found to date.
Skepticism is appropriate when gazing into the futurist's crystal ball.
In our Solar System, even the two brightest planets frequently align in our skies. But only rarely is it spectacularly visible from Earth.
The TRAPPIST-1 system is a treasure trove of possibilities and questions. Observations by JWST have just begun.
In a distant galaxy, a cosmic dance between two supermassive black holes emits periodic flashes of light.
The UAE is the first Arab nation to send a spacecraft to the Red Planet.
There will always be "wolf-criers" whose claims wither under scrutiny. But aliens are certainly out there, if science dares to find them.
The space agency describes the process of landing rovers on Mars as "seven minutes of terror."
Is mathematics woven into the very fabric of reality? Or is it merely a product of the human mind?