Universe Today Video

If you’re going to send a spacecraft to Mars, you’ve got to know that place has an insatiable hunger for our plucky robot companions. Why is this place cursed?

If science fiction has taught us anything, it’s that nothing makes a person go crazier than the harsh isolation of deep space. Will we all go crazy out there, among the stars?

We’ve talked about supernovae plenty of times, but what about just regular, plain old novae? What are they, and how are they different from the star destroying explosions we know and love?

We talked about the biggest structures in the Universe, but what about the opposite? The biggest empty spaces in the Universe, the cosmic voids that separate the clusters of galaxies.

Fraser gives 5 answers to the question, “why should we explore space when we have so many problems here on Earth?"

You know what’s scarier than a supernova? A supernova that fails, imploding into a black hole, vanishing from the Universe.

As you know, I’m obsessed about the Fermi Paradox. Where are all the aliens? But an even stranger question is: where are all the robot aliens?

Black holes are the most impressive objects in the Universe, but when happens when they crash into each other is absolutely mind-bending. They distort space and time itself, sending ripples out into the Universe.

When it comes to space helmets, there's one rule: you keep your helmet on. But there might be a couple of places in the Solar System where you can take your helmet off, just for a few moments, and not die instantly.

Absolute Zero is the coldest possible temperature, the point at which you can no longer extract any energy from a system. How close have we gotten to this lowest of lows?

Bad news, our Sun is living on borrowed time. It’s only got a few billion years left. But there might be a way we can extend its life, and make it last for trillions of years into the future.

It’s not just our Solar System that has a habitable zone, it turns out our entire galaxy has regions which would be hostile to the formation of life as we know it.

Where our atmosphere ends and space begins has been the subject of debate for some time. But thanks to decades of exploration, we have a working definition.

Elon Musk blew our minds when he suggested that it’s highly likely we’re all living in a computer simulation. Seriously? Why would he think this, and how could we tell if it’s true?

Black holes absorb everything that falls into them, including photons of light and heat. So what does it mean to ask, what temperature are black holes?