Does antimatter matter?

Matter edged out antimatter to make possible the universe we know. But no one yet knows how.

Online extra: Is there an antimatter rocket in your future?

Propelling spaceships with antimatter may be closer to reality than you think.

Zeroing in on martian water

A new orbiter will return more data than all previous missions combined to lead NASA to the Red Planet’s buried water.

Can we send a spacecraft to the Sun?

NASA’s proposed Solar Probe stretches technology and material science to their torrid limits.

Online extra: The Solar Probe flyby

Astronomers hope a proposed mission to study the Sun becomes reality.

The Sun’s biggest blasts

Coronal mass ejections, our star’s largest eruptions, shoot billions of tons of plasma into space.

All about the Horsehead Nebula

The sky’s most famous dark nebula intrigues amateur imagers and provides astronomers clues to the nature of interstellar space.

How to make a lunar mosaic

A renowned astroimager shoots the Moon using an inexpensive webcam.

Online extra: Shoot the Moon

Try these tips to create your own lunar mosaics using a webcam.

Pluto gets the boot!

An historic vote pushes Pluto aside, but some scientists are crying foul.

Online extra: How we lost Pluto

Follow Astronomy”s coverage of Pluto, politics, and the planet paradigm.

18 must-read books for cloudy nights

Explore the Moon and Mars, investigate gravity, introduce yourself to the stars, and hold the universe in your hands.


This month in Astronomy
Beautiful universe
Bob Berman’s strange universe
Glenn Chaple’s observing basics
Phil Harrington’s binocular universe

A celestial bull ride

The sky this month
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