In the mid-19th Century, astronomers hypothesized an extra planet in our solar system, orbiting between the sun and Mercury.
The International Space Station now has a bright pop of orange, thanks to commander Scott Kelly's green thumb.
Physicist Stephen Hawking has warned that new technologies will likely bring about "new ways things can go wrong" for human survival.
A night at the symphony usually means silencing cellphones and mobile devices before the music starts.
China will launch a mission to land on the dark side of the moon in two years' time, media reported, in what will be a first for humanity.
NASA is adding a third company to its short list of space station suppliers, a Nevada business that will bring back a mini version of the shuttle.
Rumors are rippling through the science world that physicists may have detected gravitational waves, a key element of Einstein's theory which if confirmed would be one of the biggest discoveries of our time.
Scientists will send a few final prods to robot lab Philae, incommunicado on the surface of a comet hurtling through space, but hopes for a reply are running out, they said Tuesday.
Futuristic self-driving cars traveling along California roads have needed plenty of old-fashioned human intervention to stay safe.
The next frontier for the tech sector is the human brain.