Stars Channel

Stars are celestial bodies made up of hot gases. Stars radiate energy that comes form thermonuclear reactions. In this section you will learn all about stars and their importance in the universe.


Could the power of a neutron star be harnessed?

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.

What's a double pulsar?

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

Could a planet exist without a host star?

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?

Could a gamma-ray burst wipe out all life on Earth?

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?

How a Supernova Works

A dying star can explode with the force of a few octillion nuclear bombs and create any element in the universe. But why do stars go supernova?

What is the universe made of?

It wasn't so long ago that astronomers thought the universe contained normal matter, or baryonic matter, the base unit of which is the atom. But when it comes to the cosmos, there's always more than meets the eye. What else is hanging out in space?

Can scientists create a star on Earth?

Stars are enormous celestial bodies hot enough to register millions of degrees. They're fascinating scientific phenomena, but is it actually possible for scientists to create them?

How do galaxies form?

Galaxies got their start nearly 14 billion years ago, with one unimaginably hot, dense and tiny pinpoint. How did we arrive at the universe's sprawling state of galactic affairs today?

How are stars formed?

Long, long ago, our sun began its life as a mere twinkle in the universe's eye. How did it become the ruler of our solar system?

What is the Milky Way?

It's your home, and a colossally sized one at that. How much do you know about your galactic digs and their residence amid the yawning universe?