Astronomy

Astronomy is a broad discipline covering all facets of astrophysics. In this section you can learn about the origins of the universe, black holes and other astronomical phenomena.


Decades after archaeologists unearthed King Tut's tomb, we're still talking about the boy-king. This time it's because of his awesome space dagger.

Understanding what's going on in the gaseous comet cloud around HD 181327 will shine a light on the early days of our own solar system.

Understanding just how the "tiger stripes" on Enceladus have sustained water eruptions from its global ocean for so long helps us learn more about Saturn's rings.

The B612 Foundation want to protect Earth from asteroid collisions with a telescope called Sentinel. The foundation just needs a few hundred million dollars to do it.

Reconciling large- and small-scale physics in a new simulation gives us better understanding of our home star.

When the James Webb Space Telescope is in orbit, it will let us peer farther back into the universe’s past than Hubble could have ever imagined.

And you thought it was tough deciding which family to visit during the holidays. We just identified two stars in the process of forming a planet – or a planetary system.

With its huge mirror now assembled, the James Webb Space Telescope is getting closer to being ready. Get to know the telescope that will enable some serious star gazing.

Our moon has the power to influence how much rain we get on Earth. The effect is too tiny to notice, but still: mad respect, Moon.

A massive planet 10 times the size of Earth seems to have been lurking on the edge of our solar system for some time now. How come we never noticed it before?

Over billions of years, the universe has produced a lot of worlds. How does it happen? Astronomers are studying young stars and the exoplanets forming around them.

Pluto may have escaped our notice for a long time in recorded history, but the amazing images from NASA's New Horizons mission have more than made up for that.

The HowStuffWorks Now team visited the James Webb Space Telescope at Goddard to see exactly what this awesome telescope is all about. Come see for yourself.

Sometimes you can't be afraid to throw an elbow, even if you're a planet.

Mars expert Robert Zubrin looks at the bestselling novel "The Martian"—and the new Matt Damon movie—for hazards interplanetary explorers would face.

We'll give you yet another reason why dark matter is cooler than visible matter.

When you think about massive, mysterious cosmic bodies like accretion disks, the water swirling around your bathtub probably isn't the first thing to come to mind. But hey, physics works the same magic on all scales.

These days, we may take the stars for granted, but it's not hard to imagine the wonder early humans must have felt gazing up at those inexplicable points of light. Naturally, superstitions were bound to develop — some more fortuitous than others.

Relying on a collapsed star to power our lives on Earth might seem like a good solution to our energy crisis, but there's just one tiny problem: The process might be lethal.

A single pulsar is fascinating enough, but as a set, these rapidly rotating neutron stars help scientists figure out mysteries of the universe.

It's not uncommon for planets to wander alone through the universe like big, sullen teenagers. But how do they end up flying solo, and could they still harbor life?

Our knowledge of space changes all the time as new discoveries are made. But some ideas about the universe have never really held water – including the one that everything is made of frozen H2O.

A billion years ago, the moon stopped being geologically active. But that's not to say that the moon is doing nothing for us. Let's find out why we owe our moon some thank-yous.

When a huge star collapses, it releases massive amounts of radiation in concentrated streams. If one of those streams hit Earth, it wouldn't be pretty. But where should we put "gamma-ray bursts" on our list of anxieties?

Precipitation does fall from the clouds of other planets, but it's a little more exotic than the good, old-fashioned rainwater we get here on Earth. Imagine sheets of methane, sulfuric acid and, yes, even diamonds falling from the sky.