New Study Helps Answer Mystery of What Happened to Mars' Early Atmosphere

Mars used to have a thicker atmosphere and water on its surface. Image Credit: M. Kornmesser/ESO

Mars used to have a thicker atmosphere and water on its surface, but what happened to that atmosphere has been a mystery. New research may finally help answer that question. Image Credit: M. Kornmesser/ESO

The question of how Mars changed from a once wet world to the much colder and drier one we see […]

Onward!: NASA Selects Next Destination for New Horizons in Kuiper Belt

Artist's conception of New Horizons at 2014 MU69. Image Credit: NASA/JHUAPL/SwRI/Alex Parker

Artist’s conception of New Horizons at 2014 MU69. Image Credit: NASA/JHUAPL/SwRI/Alex Parker

It has been nearly a month and a half since the historic flyby of Pluto by the New Horizons spacecraft, and now the mission team has selected its next target for exploration: a small Kuiper Belt object (KBO) known as 2014 MU69, which […]

Testing Panspermia: Searching for 'Bubbles of Life' in the Galaxy

Does life spread through the galaxy like an infectious disease, with "bubbles" of inhabited planets? Image Credit: Harvard-Smithsonian CfA

Does life spread through the galaxy like an infectious disease, with “bubbles” of inhabited planets? Image Credit: Harvard-Smithsonian CfA

We still don’t know if there is life elsewhere in the universe, but scientists are working on techniques to better understand how it may have originated anyway, in the event that such alien biology is […]

Back to the Ice Giants: Proposed New Mission Would Re-Visit Uranus or Neptune (or Both!)

Uranus (left) and Neptune (right). These two ice giants and their many moons are awaiting further exploration. Image Credit: NASA

Uranus (left) and Neptune (right). These two ice giants and their many moons are awaiting further exploration. Image Credit: NASA

The outer Solar System has been a busy place lately, with the ongoing Cassini mission at Saturn and New Horizons’ recent spectacular flyby of Pluto. Literally in-between those two worlds, however, it has been […]

Two Years From Today: Get Ready For the Great American Solar Eclipse of 2017

A total eclipse of the Sun, showing the Sun's atmosphere, or corona, stretching out, which is not normally visible during daylight. Photo Credit: Fred Espenak/NASA's Goddard Space Flight Center

A total eclipse of the Sun, showing the Sun’s atmosphere, or corona, stretching out into space, which is not normally visible during daylight. Photo Credit: Fred Espenak/NASA’s Goddard Space Flight Center

Exactly two years from today, on Aug. 21, 2017, a rare total solar eclipse will be seen again in the skies of the […]

The Early Solar System Could Have Hosted a Fifth Giant Planet, According to New Study

Artist’s impression of a rogue gas giant planet, free-floating in interstellar space. According to a new study, the early Solar System hosted a fifth gas giant planet besides Jupiter, Saturn, Uranus, and Neptune, which was eventually ejected into interstellar space through the gravitational interactions with the rest of the Solar System’s giant planets. Image […]

Curiosity Rover Continues Journey Up Mount Sharp After Science Observations at 'Marias Pass'

New low-angle "selfie" of the Curiosity rover taken while it was in Marias Pass. It consists of multiple images stitched together. Image Credit: NASA/JPL-Caltech/MSSS

New low-angle “selfie” of the Curiosity rover taken while it was in Marias Pass, consisting of multiple images stitched together. Image Credit: NASA/JPL-Caltech/MSSS

After extensive investigations of rock layers in Marias Pass, a shallow valley near the base of Mount Sharp, the Curiosity rover is now heading southwest again, to continue gradually climbing the […]

The Coming of the Cosmic Old Age: New Survey Finds the Universe's Energy Output Is Decreasing With Time

A composite image of a galaxy as seen in different wavelengths by the GAMA survey. The results of the survey, which studied more than 200,000 galaxies in the local Universe, revealed that the latter’s total energy output has decreased by at least 50 percent during the last 2 billion years. Image Credit: ICRAR/GAMA and […]

Our 'Glowing Moon': LADEE Spacecraft Discovers Neon in Lunar Atmosphere

Artist's conception of the LADEE spacecraft orbiting the Moon. It's findings will help scientists to better understand thin exospheres, such as the one our own Moon has. Image Credit: NASA Ames/Dana Berry

Artist’s conception of the LADEE spacecraft orbiting the Moon. Its findings will help scientists to better understand thin exospheres, such as the one our own Moon has. Image Credit: NASA Ames/Dana Berry

The existence of neon gas in our Moon’s ultra-thin atmosphere has been confirmed for the first time, by NASA’s Lunar Atmosphere and […]

Gemini Planet Imager Finds Its First Exoplanet, a Methane-Rich 'Young Jupiter'

Discovery image of the exoplanet 51 Eridani b taken by the Gemini Planet Imager on December 21 2014. Image Credit:  J. Rameau (UdeM)/C. Marois (NRC Herzberg)

Discovery near-infrared image of the exoplanet 51 Eridani b taken by the Gemini Planet Imager on Dec. 21, 2014. The relative size of Saturn’s orbit is also shown for comparison. Image Credit: Gemini Observatory/J. Rameau (UdeM)/C. Marois (NRC Herzberg)

The Gemini Planet Imager, a new telescopic instrument designed to find, image, and study faint, young planets orbiting bright stars, has discovered its first exoplanet: a young Jupiter-like planet called 51 Eridani b which orbits […]