Magazine

Science

Why doesn’t Jupiter’s Great Red Spot have an eye, like hurricanes on Earth?

Science

How did physicists measure the gravitational redshift of light?

Observing

Glenn Chaple’s observing basics: Good Sun behavior

Observing

Phil Harrington’s binocular universe: Star clusters close-up

Deep-Sky Objects, Observing

I am red-green color-blind. Will color filters enhance planetary or deep-sky object detail for me?

Observing

Mercury and Venus do the tango

Observing

Phil Harrington’s binocular universe (July 2005)

Deep-Sky Objects, Observing

Deep-sky tour challenges for summer

Science

The Sun’s other solar system

Observing

Looking ahead to the Moon’s shadow

Observing

July 2005 resources

Science

The music of Panta Rhei