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Image credit: NASA
Science Wire | Mar 27, 2015

Video: What is a pulsar?

Hear the word “pulsar” and wonder what it is? Take 95 seconds to watch this video from NASA Astrophysics.

This map shows the rover's entire traverse from landing to that point. Image credit: NASA/JPL-Caltech/MSSS/NMMNHS
Science Wire | Mar 26, 2015

Mars rover finishes first-ever marathon on another world

On Tuesday, the Mars rover Opportunity completed a marathon – 26.2 miles (42.195 kilometers). Its finish time? Eleven years and 2 months.

Science Wire | Mar 24, 2015

Does wandering Jupiter account for our strange solar system?

Jupiter may have swept through the early solar system like a wrecking ball, destroying a first generation of inner planets before retreating into its current orbit.

Science Wire | Mar 22, 2015

EarthSky meets its first crowd-funding campaign goal in one day

Web users help support the popular science website, citing “the value and impact of science education,” “science and beauty” and “sharing the wonder” as reasons.

Artist's concept of double star system Kepler-16, as viewed from cold, gaseous planet Kepler-16b.  A moon orbiting this planet might be earthlike, UT Arlington astronomers said in early 2012.  Image Credit: NASA
Science Wire | Mar 18, 2015

Most stars have planets in habitable zone

Researchers calculate that billions of stars in our Milky Way galaxy have 1-3 planets in the habitable zone, where there may be liquid water and life.

View larger | Three-dimensional perspective view of the likelihood that each region of California will experience a magnitude 6.7 or larger earthquake in the next 30 years (6.7 matches the magnitude of the 1994 Northridge earthquake, and 30 years is the typical duration of a homeowner mortgage). Image credit: USGS
Science Wire | Mar 16, 2015

New California earthquake forecast

A new long-term earthquake forecast for California by the U.S. Geological Survey revises estimates for the chances of large earthquakes over the next several decades.

This is an artist's concept of the moon Ganymede as it orbits the giant planet Jupiter.  Image credit: NASA/ESA/G. Bacon
Science Wire | Mar 15, 2015

Underground ocean on Jupiter’s largest moon

An ocean below the surface of Jupiter’s large moon Ganymede has more water than all earthly oceans, according to evidence from the Hubble Space Telescope.

This Date in Science | Mar 14, 2015

This date in science: Einstein’s birthday

While capping off the science of previous centuries, Albert Einstein changed our notions of space, time and matter … and launched modern physics.

Science Wire | Mar 14, 2015

Why beware the Ides of March?

What are the Ides of March? We in modern times probably wouldn’t know, if it weren’t for William Shakespeare.

Planet Uranus via Voyager 2 in 1986
This Date in Science | Mar 13, 2015

This date in science: Uranus discovered, completely by accident

William Herschel noticed while surveying stars that one object moved apart from the star background. It was the first planet discovered since ancient times.