In astronomy we talk about billions of years like it’s no big deal. But how can we be sure about timescales so far beyond the capacity for human intuition? Our discovery of what we now call deep time is very recent - as recent as our...

Hank tells us three things we probably didn't know about the Voyager 1 spacecraft.

The James Webb Space Telescope has launched! But it was a very long road to get to this point, and we’ve been following the progress for a decade!

Your team has developed a probe to study an alien monolith. It needs protective coatings — in red, purple and green — to cope with the environments it passes through. Can you figure out how to apply the colors so the probe survives the...

Ask any deep space navigator like Jill Seubert what makes steering a spacecraft difficult, and they'll tell you it's all about the timing; a split-second can decide a mission's success or failure. So what do you do when a spacecraft is...

We're going to be building on the Moon this decade -- and next will be Mars, says space architect Melodie Yashar. In a visionary talk, she introduces her work designing off-world shelters with autonomous robots and 3D printers and...

An ancient, abandoned alien space station has been discovered. Can you beat everyone in the galaxy and reach it first? -- It’s an incredible discovery: an abandoned alien space station filled with precursor technology. Now every...

Why are we sending a rocket into the sun? SciShow Space explains the why, what and how of Solar Probe Plus, a mission that'll give us our closest look yet at our nearest star.

On Thursday, December 4th 2014, NASA will conduct the first test flight of its new deep space crew vehicle, going farther than any passenger vehicle has in over 40 years. Get ready to meet Orion!

We've been through the first few episodes of our crash course on general relativity, and came out alive! But it's officially "time" for CURVED spacetime. Join Gabe on this week's episode of PBS Space Time as he discusses Newton and...

Hank tells us three things we probably didn't know about the Voyager 1 spacecraft.

Lasers are incredible narrow beams of light we can use to do everything from cutting metal to operating on people's eyeballs. But even though we came up with the idea on our own, humans didn’t actually make the first lasers.

From "superhabitable planets" that can potentially sustain life longer than earth to rogue planets that don't even orbit a star, we’ve talked about some strange places that could host extraterrestrial life over the last few years. Here...

Diffuse interstellar bands were first discovered in 1919 and since then scientists have found nearly 500 of them. How many do we understand? Only one.

There are billions of planets out there that don't orbit stars. The sheer abundance of these planets has led some scientists to wonder if life could emerge without a star.

Hank summarizes the five reasons why infrared telescopes were supposed to be impossible to build, and then describes how a team of scientists and engineers overcame those obstacles to build the James Webb Space Telescope.

China used the moon's gravity as a slingshot to help get a pair of damaged satellites into the correct orbit after the launch failed to do so. Credit: China Central Television (CCTV) | CGTN

NASA engineers are designing next-generation spacesuits to support daily exploration tasks on the Moon and Mars, focusing on mobility, dust control, and innovative suit-port systems to reduce contamination risks. Training programs such...

Though the Space Shuttle era has ended, NASA's Orion spacecraft represents the next leap in human space exploration, designed for missions to the Moon, Mars, and beyond. Supported by the powerful Space Launch System and innovations like...

The Space Shuttle era marked a new chapter in international collaboration, beginning with Atlantis docking at the Russian MIR station and culminating in the construction of the International Space Station—a joint effort by 15 nations...

Humanity has always been driven by a desire to explore—from sailing the Earth’s seas to launching spacecraft into the cosmos. Through decades of innovation, the Space Shuttle became a symbol of that pursuit, enabling construction of the...

As humanity prepares for its first crewed mission to Mars, innovations like the Olympus inflatable habitat and deep-space transport systems are being developed to sustain astronauts through years-long journeys in isolation. With limited...

The X-ray Multi-Mirror satellite, launched in 1999 by the European Space Agency, is the most powerful X-ray telescope in orbit. It captures detailed images by penetrating dust clouds in deep space, revealing new information about...

Space is filled with countless stars, all of which radiate enormous amounts of heat. These stars are tens of thousands of times bigger than our own sun. Still, space is considered to be cold. Why is that? If there are so many hot burning...