The Strangest Star Ever Observed from Earth

The state of our knowledge about the Universe is in a strange place now. We can map countless stars around us, but we seem to be just stumbling upon every discovery. Some of them are so puzzling, even skeptical scientists start to suspect aliens! The brightest example is the Tabby Star, who’s light dims as […]

Could We Terraform Mars?

Thanks to LEGO – presenting LEGO City – for their support of PBS Digital Studios. Humanity’s future is glorious. As we master space travel, we’ll hop from one lifeless world to the next. Life will blossom in our path and the galaxy with shimmer with beautiful Earth-like orbs. Hmmm… maybe. This won’t sound so far […]

The Fastest Star Ever Is Going Through Our Galaxy

Well hi! Unless you’re an astronomer, you probably don’t think of stars as moving all that quickly. You might not even know they move at all. If that’s the case, you’d be surprised to learn that a star called S5-HVS1 is zipping through our galaxy at over ten thousand miles per second. [siren] Alright buddy, […]

A Journey to the End of the Universe

What will happen to us in the next few hundred years? Or a thousand? How will the Universe end? How the heck should I know? Hey, nobody knows for sure, but we can gather all the existing theories together and find it out. Good thing we’ve got this time projector here to check it out […]

A Huge Emptiness Has Been Found Near Our Galaxy

“The Universe is constantly expanding.” You’ve heard that phrase plenty of times, yet have you ever really wrapped your brain around it? If the earth is a planet in the solar system, which is only a part of the Milky Way Galaxy, which is one of countless others in an infinite universe, and the whole […]

A Potentially Habitable Super Earth Has Been Discovered

Just in case anyone missed this little bit of news, the universe is big. Shocking, I know. Too big, some think, for us to be the only ones in it. It’s just a matter of knowing where to look, and scientists from NASA’s TESS program might have stumbled across the next clue in this galactic […]

Why Solar Eclipses Create Those Crescent-Shaped Lights

[♪ INTRO] Solar eclipses tend to be pretty big news. The 2017 one in North America was hugely memorable for millions of people, including the SciShow team. And the 2019 one in South America was equally amazing and Instagram-worthy. But during those events, the sky isn’t the only thing people were looking at. They were […]

The Secret to Planet Formation Might Be Hiding in the ‘Fulton Gap’

Starting in 2009, the spacecraft Kepler scanned the night sky hunting for distant worlds. Over the course of its nearly decade long mission, it identified over 2,300 confirmed exoplanets, making us realize the galaxy was much fuller than we previously thought. But poring over the data, something jumps out at you: we seem to be […]

Where does gold come from? – David Lunney

In medieval times, alchemists tried to achieve the seemingly impossible. They wanted to transform lowly lead into gleaming gold. History portrays these people as aged eccentrics, but if only they’d known that their dreams were actually achievable. Indeed, today we can manufacture gold on Earth thanks to modern inventions that those medieval alchemists missed by […]

10 Unsettling Solar System Possibilities

While decades of solar system exploration has answered many of humanity’s questions about the nature and formation of this star system, with in depth study comes even more mysteries and odd possibilities. Some of them are intriguing and strange, and some of them are outright unsettling. So here are ten of the most unsetling Solar […]