The spiral galaxy NGC 3521 looms serenely in this image, captured with two telescopes over a total exposure time of 19 hours. The image was taken from the El Sauce Observatory in Chile.
Thermoelectric generators probably won’t eliminate the charger for your Apple Watch, but for smaller, screenless wearables, the heat constantly escaping from your skin could fundamentally change how we power our devices.
The planet has definitely earned the title of Earth's evil twin.
Recent images by Hubble revealed a decagonal-shaped wave around Saturn's south pole
NASA's Hubble Space Telescope found definitive evidence of a dwarf galaxy merging with the Milky Way just 2 billion years after the Big Bang.
The 1.27 billion-year-old rock bridges a huge gap in the Red Planet's history.
The cosmic accelerator can push protons beyond one quadrillion electric volts.
