• Andromeda Galaxy

Check out the digs at our close galactic neighbor, the trillion-star Andromeda Galaxy.

• Messier 82 (M82)

Throughout the center of starburst galaxy M82, stars are forming 10 times faster than they do in the Milky Way.

• Whirlpool Galaxy and Companion

Is this majestic galaxy having a close encounter with a nearby neighbor galaxy?

• Hubble Ultra Deep Field

Peer through the universe at 10,000 galaxies stretching as far back in time as 13 billion years.

• Antennae galaxies

The tails of these colliding galaxies are supposed to resemble an insect's antennae. What do you think?

• Sombrero Galaxy

A radiant spiral galaxy drifts through distant space.

• Cartwheel Galaxy

The colorful aftermath of a galactic collision.

• Edge-on Galaxy

A spiral galaxy from a unique perspective.

• Warped Galaxy

A remarkable view of a galaxy that's bent out of shape.

• Whirlpool Galaxy

A face-on view of a classic spiral galaxy.

• Large Magellanic Cloud

The Milky Way’s gravity keeps this galactic neighbor — and its companion, the Small Magellanic Cloud — on a short leash.

Tales of … (cont'd)

• A history of colliding galaxies: From oddballs to galaxy building blocks

The study of the enigmatic galaxies that collide with, merge with, and cannibalize other galaxies.

• Finding one of the brightest and youngest galaxies in the early universe

A massive galaxy cluster — a natural "zoom lens" — helps astronomers uncover an infant galaxy.

Q&As (cont'd)

• The math behind the science

How to enhance accuracy in a galactic headcount.

Graphic Organizers (cont'd)

• Comparison of the Warped Galaxy and the Whirlpool Galaxy

Two cool galactic perspectives: On the edge and dead ahead.