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Astronomy

A star accompanying a supernova in close orbit has been discovered using NASA's Hubble Spa...

A star accompanying a rare type of supernova in close orbit has been discovered by astronomers using NASA's Hubble Space Telescope. Confirming a long-held theory that the explosion originated in a binary star arrangement, observations verify that the companion star precipitated the destruction of the aging primary star by drawing off mass until its core collapsed and triggered a supernova event.  Read More

The Laniakea Supercluster, to which our Milky Way belongs, shown in the supergalactic equa...

A new study has revealed that our Milky Way is a member of a group of local galaxies interconnected within a larger supercluster made up of a myriad of other galaxies, all interlinked within a tenuous web of filaments many millions of light years long. Dubbed "Laniakea" (Hawaiian for "immense sky") by astronomers working at the National Science Foundation’s (NSF's) Green Bank Telescope (GBT) and others around the world, this research defines hitherto unknown boundaries and connections in our corner of the universe.  Read More

Jupiter and her volcanic moon, Io (Image: NASA/JHU/APL)

A series of three massive volcanic eruptions detected on the surface of Jupiter's moon Io in August last year, has the potential to yield insights into the formation process of the surface of Earth-like planets. By any standards, these eruptions were enormous, characterized as titanic curtains of lava issuing forth from fissures several miles in length, that spewed massive amounts of material high above the moon's surface.  Read More

Scientists suggest looking for industrial pollution as a new way of searching for extrater...

According to researchers at the Harvard-Smithsonian Center for Astrophysics (CfA), we might soon be able to detect hints of technologically advanced alien civilizations by measuring high levels of polluting gases in the atmospheres of distant exoplanets. The approach should become viable soon after the James Webb Space Telescope (JWST) is launched in late 2018.  Read More

Four new images have been released to mark the 15th anniversary of the launch of the Chand...

Today is the 15th anniversary of the launch of the Chandra X-ray Observatory. Chandra is one of NASA's "Great Observatories," along with the Hubble Space Telescope and Spitzer Space Telescope. Since its launch, its x-ray vision and high sensitivity have helped us to better understand the universe.  Read More

The 3D model shows the Homunculus Nebula surrounding Eta Carinae (Image: NASA Goddard (ins...

Using a 3D printer to make key fobs and automatic pistols is old hat. The latest thing is a 3D-printed model stellar nebulae. Using new telescopic observations, NASA has created a 3D model of the Homunculus Nebula that isn't just a string of mathematical equations, but a printable plan for a physical representation of an exploding star system. It’s intended to give astronomers a better understanding of the nature of the stars, but can also be downloaded and printed out by the public using a 3D printer.  Read More

Artist's impression of stardust forming around a supernova (Image: ESO/M. Kornmesser)

Using an instrument mounted on the European Southern Observatory's (ESO's) Very Large Telescope (VLT), scientists have been able to shed light on some of the mysteries surrounding stardust by observing the event and aftermath of a supernova. The observation was undertaken in an attempt to answer a number of questions regarding stardust, chief of which being where and how the grains are formed and grow. Another oddity that the team hoped to resolve was just how these tiny, fragile particles manage to survive the inhospitable environment that prevails following a supernova.  Read More

Researchers used sound wave readings of NGC 2264 to determine the age of stars (Photo: SIR...

One of the long-standing difficulties in astrophysics has been a way to accurately determine the age of a star. Brand new stars are obvious from their location in or near "star nurseries" of interstellar gas and dust, and "adult" stars can be roughly characterized through various methods, including a calculation based on their mass and luminosity. Unfortunately, these methods are approximations at best. Researchers at KU Leuven's Institute for Astronomy have now discovered a way to distinguish young stars from older ones by measuring the acoustic waves that they emit using ultrasound technology.  Read More

The spiral galaxy NGC 4258 is ejecting gas and high-energy particles in a spectacular disp...

As the US prepares for 4th of July fireworks here on Earth, a nearby spiral galaxy similar to our Milky Way is putting on a pyrotechnics display of its own. The galaxy, NGC 4258 (also known as Messier 106 or M 106), is ejecting gas and high-energy particles in a spectacular display of power that is rippling across the face of the galaxy with shock waves of stellar energy.  Read More

A 12-hour observation of an ASKAP test field (Image: Ian Heywood and the ACES team/CSIRO)

In preparation for the Square Kilometer Array (SKA) radio telescope project set to start construction in 2018, the CSIRO’s recently unveiled Australia SKA Pathfinder (ASKAP) radio telescope array has been used to demonstrate and prove the technology involved. With the images it has captured so far, it has also shown its ability to operate as a fully-fledged radio telescope in its own right.  Read More

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