A planetary nebula; not edible

Warning: this comic occasionally contains strong language (which may be unsuitable for children), unusual humor (which may be unsuitable for adults), and advanced mathematics (which may be unsuitable for liberal-arts majors).

Scientists analyzing high-resolution images from the Large Binocular Telescope Observatory in Arizona have discovered an enormous lava lake on Io.

Dean Walker, Cathedral Peak in Yosemite, February 6, 2012

Astronomy Picture of the Day, November 18, 2012

Astronomy Picture of the Day, October 2, 2014

Warning: this comic occasionally contains strong language (which may be unsuitable for children), unusual humor (which may be unsuitable for adults), and advanced mathematics (which may be unsuitable for liberal-arts majors).

How to break up a sphere into two spheres, both the same size as the original

Starting in 2016, Partnership tax returns (1065) will be due March 15 for calendar year partnerships. Corporations returns (1120) will be due April 15.

A trove of new data from the comet lander came out this afternoon, revealing the object in unprecedented detail.

Currently on Day 123 of his year in space

Snow, aurora, Milky Way, aurora, snow

I can't draw this well.

By Douglas Scortegagna

December 22, 2013

NASA’s New Horizons mission has found evidence of exotic ices flowing across Pluto’s surface, at the left edge of its bright heart-shaped area.

Photo by Denis Budkov

1,844 ft high volcanic stack

The Standard Model is a kind of periodic table of the elements for particle physics. But instead of listing the chemical elements, it lists the fundamental particles that make up the atoms that make up the chemical elements, along with any other part ...

Newly received pics