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An artist’s impression of a collision between young Jupiter and a massive planetary embryo.

Aerial view of white roofed homes and streets forming circular patterns; St. Petersburg, Florida, USA

In 2014, megafires in Canada’s Northwest Territories scorched more than 7 million acres of forest, releasing half as much carbon back into the atmosphere as all the plants and trees in Canada typically absorb in an entire year.

Astronomers seeking life on distant planets may want to go for the glow. Harsh ultraviolet radiation from red suns, once thought to destroy surface life on planets, might help uncover hidden biospheres as they glow. That neon-like glimmer is a star-induced gleam called biofluorescence, which could turn distant exoplanets into the black-light posters of outer-space, according to new Cornell research, published Aug. 13 in Monthly Notices of the Royal Astronomical Society “Biofluorescent Worlds II: Biological Fluorescence Induced by Stellar UV Flares, a New Temporal Biosignature,”

Canada-France-Hawaii telescope.

An unexpected companion.

ExoMars parachute testing continues

Parker Solar Probe's WISPR instrument saw the solar wind streaming past during the spacecraft's first solar encounter in November 2018.

Pictured are the four candidate sample collection sites on asteroid Bennu selected by NASA’s OSIRIS-REx mission. Site Nightingale (top left) is located in Bennu’s northern hemisphere. Sites Kingfisher (top right) and Osprey (bottom left) are located in Bennu’s equatorial region. Site Sandpiper (bottom right) is located in Bennu’s southern hemisphere. In December, one of these sites will be chosen for the mission’s touchdown event.

Hubble Catches 2 Galaxies at Play.