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stars

How Do Stars Form and Evolve
Image: NASA

How Do Stars Form and Evolve

Hydrogen is the lightest, most abundant element in the universe. It's also the building block of stars: The heat- and light-producing orbs that brighten the night sky.

Some stars burn white hot, while cooler ones appear red. Take a closer look at the "most fundamental building blocks of the galaxies" and explore their possible fates — white dwarf, novae or supernovae, neutron stars, and black holes.

NASA
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Caroline Moore: Teen Astronomer/Singer

Caroline Moore: Teen Astronomer/Singer

Meet the teenage amateur astronomer who got to hang out with Barack and Michelle Obama after discovering an extremely rare supernova. More...

Profile
NOVA/PBS
Fe[26]

Fe[26]

This take on a popular puzzle game challenges you to simulate what happens as a star fuses hydrogen into heavier and heavier elements. Can you fuse your way to the 56 Iron tile? More...

Game
TestTube Games
Picture Album: Stars

Picture Album: Stars

From pulsars to protoplanetary disks, brown dwarfs to massive stars, the Hubble Space Telescope has captured fantastic images. Check out this gallery of 300+. More...

Images
aliensearth.org
Life and Death of Stars

Life and Death of Stars

Where are stars born? Do massive stars and "ordinary" ones have the same fate? Take a look a the life cycle of stars. More...

Article
NASA
Star Light, Star Bright: How Does Light Intensity Change with Distance?

Star Light, Star Bright: How Does Light Intensity Change with Distance?

What's the relationship between a star's distance and its intensity? Break out your graph paper, set up a light source, and find out. More...

Activity
Science Buddies
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Star Power

Star Power

Uncover the effects of light pollution with the SciGirls as they search for constellations. More...

Video
SciGirls/PBS
Stars: Videos

Stars: Videos

Why do stars twinkle? How do scientists figure out their age? Why are they different colors? Each answer is just a short video away. More...

Video
NeoK12.com
Stellar Evolution: A Journey with Chandra

Stellar Evolution: A Journey with Chandra

How does a Type II Supernova form? Why is a Blue Supergiant violently unstable? Explore the ways stars of different masses evolve. More...

Interactive
Harvard/NASA
Alpha Centauri: Nearest Star System to the Sun

Alpha Centauri: Nearest Star System to the Sun

The Sun is Earth's closest stellar neighbor. What's next in space? The 3 stars in the Alpha Centauri system — about 4.3 light years away. Travel there and back in under 2 minutes with this video trip. More...

Video
Space.com
Interactive: Moving Targets

Interactive: Moving Targets

Astronomers use the Doppler effect to measure how fast stars are moving and their direction. Try this interactive to see how they do it. More...

Interactive
NOVA/PBS
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Physics of Stars

Physics of Stars

Have a question about stars? Chances are it's already been asked (and answered) in this "Ask an Astrophysicist" library. More...

Profile
NASA
Sirius: Brightest Star in Earth’s Night Sky

Sirius: Brightest Star in Earth’s Night Sky

Nicknamed the "Dog Star" because it's part of the Canis Major, Sirius A is the brightest star in the night sky. Take a look at its role in ancient history — and new findings from the past decade. More...

Article
Space.com
Spectroscopy of Stars

Spectroscopy of Stars

How can astronomers know what the Sun or any other star is made of? In fact, it isn't hard to find out. More...

Video
BBC
Star Fall

Star Fall

How do you get a high score in this game? Pick the hottest stars and round up the biggest grouping. More...

Game
NASA
The Dragon and the Swan

The Dragon and the Swan

NASA's Spitzer Space Telescope found a dragon "hidden behind a veil of dust" in the constellation Sagittarius. See what it tells us about spiral arms and the formation of stars. More...

Video
JPL/NASA
The Star of Bethlehem, Again

The Star of Bethlehem, Again

In 2 B.C., Venus and Jupiter — the two brightest planets in our night sky — were aligned so they looked almost like one. Was that event the "Christmas star"? More...

Article
Discover Magazine
Types of Stars

Types of Stars

A star's classification indicates its surface temperature, size and more. Explore how to classify stars with this interactive. More...

Interactive
MrNussbaum.com

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