An illustration of an exoplanet that orbits orbits Coku Tau 4, a star located 420 light-years away.
Each week we uncover the most interesting and informative articles around, here are 10 of the coolest stories in Science this week.
Gravitational waves found! A century after Albert Einstein first proposed ripples in spacetime as part of his theory of relativity proof of their reality was found by astrophysicists.
The science of mystical experiences: A newly released study found that mystical experiences may occur when the brain's inhibitory processes are subdued, opening a "door of perception."
Sleeping with Neanderthals: Ancient rendezvous between Neanderthals and modern humans may have impacted risks for depression, heart attacks, nicotine addiction, obesity and other health problems in humans today, experts say.
Meteorite did not kill man: Experts cast doubt on an assertion from Indian authorities that a meteorite killed a man earlier this week, with NASA scientists going so far as to suggest it was a "land-based explosion."
[Full Story: Meteorite Did NOT Kill Man in India: Experts]
Slime can see: Cyanobacteria may use their whole body to gatther light, similar to a camera, aiding the primitive organisms in "seeing" and enabling them to move toward light.
[Full Story: Bacterial Slime Acts As Teensy Eyeball]
Turning off a waterfall: Plans to turn off two of the three falls on the American side of Niagara Falls to perform much-needed bridge repair could also yield geology insights into the rock-cutting process, new research suggests.
E.T. and Greenhouse: A new study indicates that the greenhouse effect can destroy a planet's chances of hosting life, lowering the likelihood of humans locating aliens.
Cluster of porn stars get HIV: A group of male adult film stars are now infected with HIV even though regular testing was performed, underscoring the need for multiple forms of precautions to be taken.
The real numbers on pot use: Though reported numbers of people smoking pot are rising, it likely has nothing to do with legalization of the substance but simply a willingness by more users to admit their use.
[Full Story: High Numbers: Are More People Really Smoking Pot?]
Robotic roach can fit through tight spaces: Robots inspired by cockroaches may one day aid first-responders in search and rescue missions after disasters.
[Full Story: In a Tight Spot? Robo-Roach Can Flatten Itself to Help ]