Kepler Update: Earth's 'Bigger and Older Cousin' Discovered Orbiting Distant Star

Artist’s conception of Kepler-452b, the first near-Earth-sized exoplanet discovered orbiting in the habitable zone of a Sun-like star. Image Credit: NASA Ames/JPL-Caltech/T. Pyle

One of the primary goals in the search for exoplanets is to, hopefully, find an Earth analog or “Earth twin,” an alien world similar to our own. That search is still […]

The Case of the Helium-Shrouded Exoplanet With the Hydrogen, Comet-Like Tail

An artist's concept of the vast envelope of atomic hydrogen that envelopes the nearby helium-dominated exoplanet Gliese 436b. The radiation pressure from the planet's host star causes the gradual escape over time of significant amounts of hydrogen from Gliese 436b's atmosphere into space, which subsequently forms a large comet-like tail that follows the planet in its orbit around its star. Image Credit: NASA, ESA, and G. Bacon (STScI)

An artist’s concept of the vast envelope of atomic hydrogen that envelopes the nearby helium-dominated exoplanet Gliese 436b. The radiation pressure from the planet’s host star causes the gradual escape over time of significant amounts of hydrogen from Gliese 436b’s atmosphere into space, which subsequently forms a large comet-like tail that follows the planet […]

Hubble Reveals Fascinating and Chaotic Properties of Pluto's Moons

Using a set of archival data that were taken with the Hubble Space Telescope. astronomers were able to conduct the most comprehensive and detailed study to date of Pluto’s four smaller moons, Nix, Hydra, Kerberos and Styx. This artist’s illustration shows the scale and comparative brightness of these small satellites, as discovered by Hubble […]

New Study Reassesses Habitability of Exoplanets Around Multiple Star Systems

An artist’s concept of Kepler-47, which was the first-ever planetary system to be discovered orbiting a binary star. A new research that was based on data taken with NASA’s Hubble Space Telescope provides stringest limits to the potential habitablity of exoplanets in several such systems. Image Credit: NASA/JPL-Caltech/T. Pyle

One defining scientific revolution of […]

Cloudy With a Chance of Sunshine: Astronomers Study Weather on Distant Exoplanets

An artist’s rendering of the possible weather and atmospheric circulation patterns on hot Jupiters. A new research by a team of astronomers that was based on data taken with NASA’s Kepler space telescope, studied the phase variations that occur as different portions of these planets are illuminated by their host stars as seen from […]

Enceladus' Water Geysers May Be 'Curtain Eruptions' According to New Study

The water vapor jets on Enceladus are now thought to mostly be more like diffuse “curtains” rather than separate plumes. Image Credit: NASA/JPL-Caltech/SSI/PSI

The water vapor geysers on Saturn’s moon Enceladus are one of the most fascinating phenomena in the Solar System; the jets spray far out into space in a dazzling display unseen […]

Astronomers Find First Evidence of Possible Volcanic Activity On a Super-Earth Exoplanet

Artist’s conception of super-Earth exoplanet 55 Cancri e, before and after volcanic activity on its day side. The surface may be partially molten. Image Credit: NASA/JPL-Caltech/R. Hurt

Discovering new exoplanets has become rather routine in the last few years, but determining just what conditions exist on any of them is naturally more difficult, since […]

Worlds Beyond Our Own: Celebrating 25 Years of Hubble Science (Part 3)

A stunning image of a giant cluster of about 3,000 stars, called Westerlund 2, which lies approximately 20,000 light-years away from Earth. This image was officially selected by NASA to commemorate the 25th anniversary since the launch of the Hubble Space Telescope, on April 24, 1990. Image Credit: NASA, ESA, the Hubble Heritage Team […]

Discovery of Salty Aquifer Beneath Antarctica May Have Implications for Life on Mars

The SkyTEM sensor suspended beneath a helicopter over Blood Falls and the Taylor Glacier in Antarctica. Photo Credit: L. Jansan

Scientists have discovered a vast network of salty aquifers beneath the surface of Antarctica, thanks to an airborne imaging system used there for the first time. The finding may have interesting implications for the […]

New NASA NExSS Coalition to Lead Search for Life on Distant Exoplanets

NASA’s NExSS collaboration will bring together scientists from diverse backgrounds to help search for evidence of life in other Solar Systems. Image Credit: NASA

The search for, and discovery of, exoplanets orbiting other stars has become a full-fledged endeavour in recent years, with thousands found so far and more being discovered practically every week. […]