New Study Finds Unusual Mathematical Pattern in Cosmic Radio Bursts

A dramatic night-time image of the 64-m Parkes radio telescope in Australia, under the splenor of the Milky Way. The iconic telescope has detected during the last decade a total of 10 mysterious cosmic radio flashes, known as ‘fast radio bursts’. A new study now suggests that these astrophysical sources exhibit a surprising and […]

Hubble and Chandra Unveil Mysteries Concerning Dark Matter

From HubbleSite: “This collage shows images of six different galaxy clusters taken with NASA’s Hubble Space Telescope and Chandra X-ray Observatory. The clusters were observed in a study of how dark matter in clusters of galaxies behaves when the clusters collide. Seventy-two large cluster collisions were studied in total. Using visible-light images from Hubble, […]

Spacecraft Assembly Begins for NASA's OSIRIS-REx Asteroid Sample Return Mission

Artist concept of OSIRIS-REx, the first U.S. mission to return samples from an asteroid to Earth. Image Credit: NASA/Goddard

The first United States mission in history to launch a robotic spacecraft to an asteroid, retrieve samples, and return those samples back to Earth for study just passed a big milestone in its development this […]

Two Earth-Sized Exoplanets May Exist in Closest Star System, Hubble Observations Reveal

Artist’s conception of the Alpha Centauri binary star system and the exoplanet Alpha Centauri Bb. Our own Sun is also shown in the distance. Image Credit: ESO/L. Calçada/N. Risinger

The closest star system to our own Sun may have two Earth-sized exoplanets orbiting it, a new study has shown based on observations by the […]

Jupiter Might Be Responsible for Our Unusual Solar System, Study Suggests

A montage of Jupiter and its volcanic moon Io, as seen by NASA’s New Horizons spacecraft on its way to Pluto. The results of a new study indicate that the massive gas giant fundamentally altered the evolution of the early Solar System, by destroying any “Super-Earth”-type planets that may have formed, while opening the […]

Scientists Create Color-Based Catalog of Earthly Life Forms to Help Search for Alien Biology

A hypothetical rendering of colorful plant life on a habitable exoplanet. Although most such alien life, if it exists, found with this technique may be microscopic, it illustrates how analysis of color could help scientists learn more about the physical nature of alien biology. Image Credit: NASA/Caltech/Doug Cummings

With exoplanets now being discovered by […]

In Search of the Invisible Universe: Newly Discovered Dwarf Galaxies Around the Milky Way Might Hold Clues to Dark Matter

An illustration showing the distribution of the two dozen known dwarf satellite galaxies around the Milky Way. Astronomers have recently discovered nine more additional such candidate objects below the plane of the galaxy, shown here in red. Image Credit: S. Koposov, V. Belokurov (IoA, Cambridge). Background: 2MASS

The mystery of dark matter has dominated […]

'Since the Earth Cooled': 20 Years Since the Record-Setting Mission of STS-67 (Part 2)

Endeavour touches down at Edwards Air Force Base, Calif., on 18 March 1995, after almost 17 days in orbit. Photo Credit: NASA

Records are there to be broken, and in March 1995—20 years ago, this week—the crew of Endeavour was midway through what turned out to be the longest flight in shuttle program history […]

'Instant Daylight': 20 Years Since the Record-Setting Mission of STS-67 (Part 1)

Commander Steve Oswald leads the STS-67 crew out of the Operations and Checkout Building on the late evening of 1 March 1995, bound for a liftoff in the small hours of the following morning. Photo Credit: NASA

Twenty years ago, this week, seven astronauts, including four professional astronomers, were midway through what turned out […]

Under the Light of a Quadruple Sun: Astronomers Discover Additional Stellar Companions in Nearby Exoplanetary Systems

Artist’s conception of the quadruple star system 30 Arietis. The primary star, called 30 Arietis B, has a companion (the small “red dwarf” star shown at upper left). This pair of stars is itself locked in a long-distance orbit with another pair of stars (upper right), known as 30 Arietis A. A team of […]