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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?

Michio Kaku predicts, among other things, how we'll build cities on Mars and why cancer will one day be like the common cold.

Coupled with 3D printing, biomining the Moon or Mars with microbes could sustain human colonies without constant re-supply from Earth.

Google maps won’t guide you to Mars - but will your compass work in space?

Scientists have long puzzled over how Mars, a cold and dry planet, was once warm enough to support liquid water.

A tiny layer of microscopic dust is the only reason it appears red. When we look out at our planet Earth from space, we see a myriad of diverse colors. The […]

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 […]

Communication with home will be difficult on long-haul space flights. The longer this isolation goes on, the more detached a crew becomes.

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.

Nearly 200 orbital launches are scheduled for 2022.

Shortly after planet Earth formed, life took a permanent hold on our surface. But just how common is such an outcome?

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.

Astrophysicist Michelle Thaller explains how a solar storm could wipe out civilization… and what we can do to prevent catastrophe.

The UAE is the first Arab nation to send a spacecraft to the Red Planet.

Water is vital for life. Luckily for spacefaring humans, the solar system is full of it.

There will always be "wolf-criers" whose claims wither under scrutiny. But aliens are certainly out there, if science dares to find them.

The far side of the Moon is incredibly different from the Earth-facing side. 63 years later, we know why the Moon's faces are not alike.

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?