Astronomers Begin Worldwide Observations of 'Unusual' Star as SETI Listens for Alien Signals

Astronomers have begun a follow-up study of the unusual star KIC 8462852 in the hopes of explaining Kepler’s enigmatic observations. To that end, the American Association of Variable Star Observers recently issued a call to the astronomical community worldwide for more detailed observations, while the SETI Institute has began searching for possible radio signals […]

NASA's Chandra Sees Eclipsing Planet in X-rays for First Time

Image Credit: X-ray: NASA/CXC/SAO/K. Poppenhaeger et al; Illustration: NASA/CXC/M. Weiss

For the first time since exoplanets, or planets around stars other than the sun, were discovered almost 20 years ago, X-ray observations have detected an exoplanet passing in front of its parent star.

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Another Look at Fermi’s Paradox

If intelligent alien life is so abundant, then where is it? Image Credit: NASA / HST

Enrico Fermi was a theoretical and experimental physicist known for his work on the first nuclear reactor and his contributions to quantum theory, particle physics, and statistical mechanics. He won the Nobel Prize in 1938 and was widely […]

Opinion: Wow is SETI's Answer

Photo Credit: SETI

I thought it might be a good time to revisit the big question on so many minds for so many years. Are we alone?

Many wonder why, in a galaxy supposedly teeming with life and after searching the cosmos for over 50 years with increasingly powerful radio telescopes, have we not […]

Where Are the Best Windows Into Europa's Interior?

This graphic of Jupiter’s moon Europa maps a relationship between the amount of energy deposited onto the moon from charged-particle bombardment and the chemical contents of ice deposits on the surface in five areas of the moon (labeled A through E). Image Credit: NASA/JPL-Caltech/Univ. of Ariz./JHUAPL/Univ. of Colo.

The surface of Jupiter’s moon Europa […]

Martian Evolution: From Sojourner to Curiosity—A Legacy

The Curiosity rover on Mars has found compelling evidence that the Red Planet could have once supported life. However, it was a long road that led to Curiosity’s capabilities, and it all began with Sojourner. Image Credit: NASA

This article originally appeared in The Mars Society’s The Mars Quarterly. As part of AmericaSpace’s partnership […]

NASA's Kepler Space Telescope Discovers Tiny Worlds

NASA’s Kepler mission has discovered a solar system that is home to the smallest planet yet found orbiting another star like our Sun. The system is approximately 210 light-years away in the Constellation Lyra. Image Credit: NASA/Ames/JPL-Caltech

The Kepler Space Telescope mission has encountered a tiny planetary system orbiting a star much like our […]

The Search for Alien Life Part 2: In the Realm of the Gas Giants

The trailing hemisphere of Jupiter’s moon Europa as imaged by Galileo. Photo Credit: NASA

Beyond the main asteroid belt lie the giant planets Jupiter and Saturn and their impressive retinues of moons. What chances for life are out here in the frozen wastes of the solar system? At first glance, you’d imagine none. The […]

The Search for Alien Life Part 1: Where are the Martians?

Mars shows plenty of evidence for flowing water on its surface, as in the case of these channels in Newton Crater. Does this mean that the Red Planet ever supported life? Photo Credit: NASA

On July 20, 1976, a 572-kilogram spacecraft, supported on three sturdy legs, touched down on the orange sands of Mars […]