An artist's rendition of a supernova. (NASA, ESA, G. Bacon (STSci)) At a Glance Astronomers have discovered a decades-old supernova that is the first of its kind.The exploding star is 50 times the mass of the sun and is the longest-lived in history.It was observed in September 2014, but researchers discovered it has been exploding since 1954. A star that appeared to have exploded and died multiple times refuses to stop existing completely, and researchers believe this everlasting supernova isthe...

At a Glance Jupiter and Venus will make an early morning conjunction. The planets will appear to be a distance less than the diameter of a full moon away from each other. Early Monday morning, Jupiter and Venus will come together for a brilliant cosmic show as they move closer to one another. In this phenomenon, known as a conjunction, to one another, according to EarthSky.org. It also occurs when a single solar system body gets near another object in...

Venus and Jupiter will appear to move past each other before dawn on Monday. ...

Venus and Jupiter will appear to move past each other before dawn on Monday, November 13th. ...

At a Glance Tuesday's launch of the JPPS-1 weather satellite was aborted just minutes before liftoff.The launch has been rescheduled for Wednesday.Once in orbit, the satellite will be renamed NOAA-20. United Launch Alliance has rescheduled the launch of a next-generation weather satellite for Wednesday aftera rocket issue prevented a planned liftoff from Vandenberg Air Force Base in California on Tuesday morning, NASA says. According to NASA, the launch was after scientists detected a bad reading on the first stage of...

Layers of haze above Pluto, as seen by NASA’s New Horizons spacecraft during its flyby of the dwarf planet in July 2015. (NASA/JHUAPL/SwRI) At a Glance Scientists estimated Pluto's temperature would hover around minus 280 degrees Fahrenheit.Data collected by NASA's New Horizons probe put the temperature some 53 degrees colder than expected, puzzling scientists.A new study explains the discrepancy on the dwarf planet's hydrocarbon particle-laden haze. Scientistshave been working for the past two years to understand why Pluto's surface temperatures...

The Arecibo Observatory in Puerto Rico. (NAIC Arecibo Observatory, a facility of the NSF) At a Glance Built deep in Puerto Rico's jungle in the 1960s, the observatory has become a recognizableicon in popular culture.It served as a location for the James Bond film GoldenEye and the Jodie Foster film Contact. The world's second-largest radio telescope, Puerto Rico's iconic Arecibo Observatory, has been saved from demolition despite damage incurred during Hurricane Maria. The National Science Foundation announced Wednesday that enabling...

The third attempt by NASA to launch an advanced weather satellite was successful Saturday from Vandenberg AFB in California. The JPSS-1 is the first in NOAA’s series of four next-generation satellites planned to circle the Earth in a polar orbit, according to NASA. The satellites will help predict severe weather and monitoring environmental conditions. ...

Stunning nighttime videos of the skies over Croatia by photographer Božan Štambuk. ...

Scientists think they’ve solved the mystery of why the dwarf planet is surprisingly cold. ...

Astronomers are elated over the discovery of an asteroid from another solar system. ...

At a Glance An asteroid known as 'Oumuamua is the first of its kind ever spotted by astronomers.It was reclassified as an interstellar asteroid, a newly discovered category, after being mistaken for a comet. It is up to one-quarter mile wide and very elongated, which gives it a cigar-like shape. An asteroid that sped through our solar system has drawn the attention of astronomers with itsdeep space origins andout of the norm characteristics. Named ‘Oumuamua, the asteroid is , according...