Clouds over the Indian Ocean

Satellite image of marine stratocumulus clouds stretched across the southern Indian Ocean.

Equinox sunrise

East ... the direction of sunrise, new beginnings, springtime! Happy equinox to all.

Stars before sunrise

A starry sky before sunrise, over Clear Creek, Arkansas.

Moon and Jupiter on March 17, 2013

A beautiful image of last night's moon and planet Jupiter from EarthSky Facebook friend VegaStar Carpentier in Paris.

100-million-year-old spider attack

The only fossil ever discovered of a spider attack on prey caught in its web – a 100 million-year-old snapshot of an engagement caught in amber.

This is 3C273. It changed our thinking about the universe.

March 16, 2013 is the 50th anniversary of the revelation that quasars are both very distant and very luminous - and therefore must be exceedingly powerful.

The greening of Earth’s northerly latitudes

Temperature and vegetation growth at northern latitudes now resemble those found 4 degrees to 6 degrees of latitude farther south as recently as 1982.

Comet PANSTARRS near last night’s moon

Many saw the comet near the moon on the evening of March 12. Did you look for it and not see it? Try these tips for spotting Comet PANSTARRS.

For many, Comet PANSTARRS’ northern sky debut tonight

Now it's the Northern Hemisphere's turn to see Comet PANSTARRS. The comet will be near the moon March 12 and 13. Look west immediately after sunset.

Ice on the rocks

Small ice sculpture which formed over lake in Vänersborg, Sweden