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A molecule containing a noble gas has been discovered in space. The molecule, argon hydride, was seen in the Crab Nebula, the remains of a star that exploded 1,000 years ago.
First discovered in 2007, "fast radio bursts" continue to defy explanation. These cosmic chirps last for only a thousandth of a second. The characteristics of the radio pulses suggested that they came from galaxies billions of light-years away. However, new work points to a much closer origin -- flaring stars within our own galaxy.
NASA's Hubble Space Telescope has observed water vapor above the frigid south polar region of Jupiter's moon Europa, providing the first strong evidence of water plumes erupting off the moon's surface. Previous scientific findings from other sources already point to the existence of an ocean located under Europa's icy crust. Researchers are not yet fully certain whether the detected water vapor is generated by erupting water plumes on the surface, but they are confident this is the most likely explanation.
The Hubble Space Telescope has discovered water vapor erupting from the frigid surface of Jupiter's moon Europa, in one or more localized plumes near its south pole. Europa is already thought to harbor a liquid ocean beneath its icy crust, making the moon one of the main targets in the search for habitable worlds away from Earth. This new finding is the first observational evidence of water vapor being ejected off the moon's surface.
After a year of observations, scientists waited with bated breath on Nov. 28, 2013, as Comet ISON made its closest approach to the sun, known as perihelion. Would the comet disintegrate in the fierce heat and gravity of the sun? Or survive intact to appear as a bright comet in the pre-dawn sky?
A long-standing difficulty with supercomputer simulations of the evolution of galaxies has been getting consistent results among different codes (programs) and with actual observations, so simulated galaxies look like real galaxies. But reproducibility is one of the most elementary principles in scientific methods. An ambitious new multiyear project AGORA aims to understand and resolve such inconsistencies.
If recent news that researchers observed the largest gamma ray burst ever has you nervous about getting blasted into extinction, the researchers themselves say chances of that are exceedingly rare.
NASA's Juno Spacecraft Hears Amateur Radio Operators Say 'Hi': Message was first-of-its-kind for an interplanetary spacecraft
In a first-of-its-kind activity for an interplanetary spacecraft, thousands of amateur (ham) radio operators around the world were able to say “Hi” to NASA’s Juno spacecraft Oct. 9 as it swung past Earth on its way to Jupiter.
An atmospheric peculiarity the Earth shares with Jupiter, Saturn, Uranus and Neptune is likely common to billions of planets, astronomers have found, and knowing that may help in the search for potentially habitable worlds.
In the first 300 days of the Mars Science Laboratory's surface mission, the Curiosity rover cruised around the planet's Gale Crater, collecting soil samples and investigating rock structures while the onboard Radiation Assessment Detector made detailed measurements of the radiation environment on the surface of Mars. The radiation on Mars is much harsher than on Earth for two reasons: Mars lacks a global magnetic field and the Martian atmosphere is much thinner than Earth's, providing little shielding to the surface.
A massive ejection of material from the sun initially traveling at over 7 million miles per hour that narrowly missed Earth last year is an event solar scientists hope will open the eyes of policymakers regarding the impacts and mitigation of severe space weather.
Astronomers have captured never-before-seen details of the nearby starburst galaxy M82. These new data highlight streamers of material fleeing the disk of the galaxy as well as concentrations of dense molecular gas surrounding pockets of intense star formation.
A spacecraft at near-Earth orbit is continuously bombarded by charged particles. Scientists have now developed a unique model that simulates electron environment in the near-Earth space.
NASA's Curiosity Mars rover has passed the milestone of 100,000 shots fired by its laser. It uses the laser as one way to check which chemical elements are in rocks and soils.
An international team of astronomers has captured an image of the intricate flow of Comet Lovejoy's ion tail.
Planetary instruments from NASA's Goddard Space Flight Center in Greenbelt, Md., hit the trifecta on Dec. 4, running three experiments of the same kind at different places in space.
Astronomers have discovered the most distantly orbiting planet found to date around a single, sun-like star. Weighing in at 11 times Jupiter's mass and orbiting its star at 650 times the average Earth-Sun distance, planet HD 106906 b is unlike anything in our own Solar System and defies current planet formation theories.
A new study using observations from a novel instrument provides the best look to date at magnetic fields at the heart of gamma-ray bursts, the most energetic explosions in the universe. An international team of astronomers has glimpsed the infrastructure of a burst's high-speed jet.
Astronomers have identified the glowing wreck of a star that exploded a mere 2,500 years ago — the blink of an eye in astronomical terms.
NASA's Cassini spacecraft has obtained the highest-resolution movie yet of a unique six-sided jet stream, known as the hexagon, around Saturn's north pole.