Magazine | Page 69 of 278 | Astronomy.com

One night I noticed a star changing colors and moving perceptibly. But through binoculars, a few dimmer stars in the same field appeared steady. The behavior continued throughout the night, but not a couple of nights later. Why?

How are so many exoplanets detected via transits, while transits of Mercury and Venus are so rare? Do all the chance transit alignments fit statistically?

The 10 biggest things in astronomy

The Red Planet revealed

A lunar Stonehenge

Science, Solar System

The processed images from Juno are spectacular, but they don’t resemble previous images of Jupiter. Why are they so different from those returned by earlier missions?

Mars closes in

The return of the Red Planet

Shoot the Sun, Moon, and planets

Telescopes and Equipment

We test Sigma’s 20mm lens

When does a star’s size violate the laws of physics?

Scorpion treasures