Best of Pop Quiz 2010

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Moon Mysteries and Myths Quiz

For every fact we know about the moon there are a hundred superstitions, legends, and mysteries. See how well you know your lunar lore.
Brain Quiz

Are you a brain when it comes to the brain? Find out with this quiz and give your gray matter a workout in the process.
Solar System Quiz

Our solar system is filled with mysterious and often mind-blowing phenomena. Do you know asteroids from meteoroids and Venus from Mars?
Stress Quiz

How much do you know about stress and how it affects your body? Take the quiz and find out—but don't stress about it.
Air and Space Quiz

Think you know the Smithsonian National Air and Space Museum inside and out? Test your aeronautics IQ with our carefully curated questions.
Moon Landing Quiz

How much do you know about U.S. Apollo missions?

Blog: StarStruck

Herschel Space Observatory Running On Empty

After three years of scouring the universe for evidence of the most distant galaxies, the Herschel Space Observatory is running out of fuel.
Chasing the Total Solar Eclipse

When the Moon slips between the Earth and Sun this week, Slovak astronomer Vojtech Rusin will be ready on a hotel balcony in Cairns, Australia to witness his 19th total solar eclipse.
A Grand Tour of the Universe

Armchair astronomers this kind of atlas—a series of maps and charts that evokes the ability to navigate a place, usually by ship or some sort of vehicle, is for you. In this case all you need is imagination.

Longevity Pictures

Our genes harbor many secrets to a long and healthy life. And now scientists are beginning to uncover them
Element Hunters Pictures

All the elements found in nature—the different kinds of atoms—were found long ago. To bag a new one these days, and push the frontiers of matter, you have to create it first.
Good Gas, Bad Gas

Burn natural gas and it warms your house. But let it leak, from fracked wells or the melting Arctic, and it warms the whole planet.

Explorer Moment: Ray of Hope

Biologist Andrea Marshall leads her team in discovering new and conserving known manta ray species.
Sylvia Earle on Women in Science

Sylvia Earle reflects on her scientific career and on gender obstacles she faced along the way.