Best photos of the comet

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Comet C/2014 Q1 (PANSTARRS) is easiest to catch in binoculars from Earth's Southern Hemisphere. Many have captured dazzling photos of the comet.

Deborah Byrd

July 24, 2015

Kepler-452b is older, bigger Earth cousin

The Kepler mission has confirmed the first near-Earth-size planet in the habitable zone - or zone where liquid water can exist - around a sunlike star.

Deborah Byrd

July 23, 2015

Good news! More sharks!

White shark populations are growing. Here’s why that’s good news.

EarthSky Voices

July 23, 2015

What black holes like to eat

Astronomers have caught a monster black hole in the act of eating a star. But, they say, stars are not standard fare for black holes.

Deborah Byrd

July 23, 2015

Double red rainbow over New Mexico

It's rare to see a red rainbow. Sky conditions have to be just right, and the timing has to be right. If you do see one, you'll never forget it.

Deborah Byrd

July 23, 2015

More ice mountains in Pluto’s heart

A second range of ice mountains has been found on Pluto, in images from New Horizons.

Andrew R. Brown

July 22, 2015

New NASA video on flood prediction

Predicting flooding is notoriously difficult, but predictions are improving. Timely video in light of James Hansen's prediction this week of catastrophic flooding in New York and other coastal cities before the end of this century.

Eleanor Imster

July 22, 2015

How mosquitoes find you to bite you

Mosquitoes use a triple threat of visual, olfactory, and thermal cues to home in on their human targets, a new Caltech study suggests.

Editors of EarthSky

July 22, 2015

Closest views yet of Nix and Hydra

Pluto has five known moons, and it's a bit surprising that New Horizons hasn't found any new ones yet. Newly released images show small moons Nix and Hydra.

Andrew R. Brown

July 22, 2015