More from Science & Technology

The surface of the comet 67P/Churyumov–Gerasimenko with dust and visualizations of cosmic rays. The downward moving points of light in the background are stars. Filmed by the Rosetta spacecraft's OSIRIS instrument. Rosetta was a space probe built by the European Space Agency launched on 2 March 2004. Along with Philae, its lander module, Rosetta performed a detailed study of comet 67P/Churyumov–Gerasimenko. During its journey to the comet, the spacecraft flew by Mars and the asteroids 21 Lutetia and 2867 Šteins. #science #technology #space #cosmos #comets

Physicist Stephen Hawking in Zero Gravity Stephen Hawking (center) enjoys zero gravity during a flight aboard a modified Boeing 727 aircraft owned by Zero Gravity Corp. (Zero G). Hawking, who suffers from amyotrophic lateral sclerosis (also known as Lou Gehrig's disease) is being rotated in air by (right) Peter Diamandis, founder of the Zero G Corp., and (left) Byron Lichtenberg, former shuttle payload specialist and now president of Zero G. Kneeling below Hawking is Nicola O'Brien, a nurse practitioner who is Hawking's aide. At the celebration of his 65th birthday on January 8, 2007, Hawking announced his plans for a zero-gravity flight to prepare for a sub-orbital space flight in 2009 on Virgin Galactic's space service. #NASA #science

More from Science & Technology

The surface of the comet 67P/Churyumov–Gerasimenko with dust and visualizations of cosmic rays. The downward moving points of light in the background are stars. Filmed by the Rosetta spacecraft's OSIRIS instrument. Rosetta was a space probe built by the European Space Agency launched on 2 March 2004. Along with Philae, its lander module, Rosetta performed a detailed study of comet 67P/Churyumov–Gerasimenko. During its journey to the comet, the spacecraft flew by Mars and the asteroids 21 Lutetia and 2867 Šteins. #science #technology #space #cosmos #comets

Physicist Stephen Hawking in Zero Gravity Stephen Hawking (center) enjoys zero gravity during a flight aboard a modified Boeing 727 aircraft owned by Zero Gravity Corp. (Zero G). Hawking, who suffers from amyotrophic lateral sclerosis (also known as Lou Gehrig's disease) is being rotated in air by (right) Peter Diamandis, founder of the Zero G Corp., and (left) Byron Lichtenberg, former shuttle payload specialist and now president of Zero G. Kneeling below Hawking is Nicola O'Brien, a nurse practitioner who is Hawking's aide. At the celebration of his 65th birthday on January 8, 2007, Hawking announced his plans for a zero-gravity flight to prepare for a sub-orbital space flight in 2009 on Virgin Galactic's space service. #NASA #science