One of the most powerful black holes in the observable universe has been revealed by NASA's Chandra X-Ray Observatory.
The startup is offering its sellers a chance to purchase new items at wholesale, instead of relying solely on used items to fill their online shops.
Chromecast Audio can plug into any speaker with a headphone jack to wirelessly stream music from your mobile device or PC.
The search giant shows off two smartphones, two streaming devices, a tablet and a new version of its Android software. Google's message is clear: We can be your everything.
Interstellar echoes from a flaring neutron star have allowed astronomers to solve a mystery -- pinpointing the star's location.
Astronomers have pieced together Hubble data to observe a collision between knots of matter in the jet of a supermassive black hole for the first time.
The Sphere instrument on the VLT in Chile peers with all its might into the blackness around a binary star system and returns a surprise for astronomers.
Its root cause still undetermined, a huge X-ray flare from the Milky Way's center has made NASA scientists sit up and take notice.
The discovery of a new unusually bright dead star leads astronomers to question assumptions about a type of cosmic radiation -- and pulsars themselves.
Second-hand clothing apps are luring women from other online marketplaces by promising built-in community and profits.