How big can they get? What's the largest so far detected? Where does an 18 billion solar mass black hole hide? We've never seen them directly, yet we know they are there. Lurking within dense star clusters or wandering the dust lanes of the galaxy. Where they prey on stars. Or swallow planets whole....

The 26-year-old star has unveiled a lyric video to go with the fourth track from his latest record 'Divide', which sees him nominated for three Q Awards this year. The 'Castle on the Hill' hitmaker could go home with the Best Track prize for 'Shape of You', Best Solo Artist and Best Act In The Worl...

Pollination is the process by which pollen is transferred in the reproduction of plants, thereby enabling fertilization and sexual reproduction. This wonderful video demonstrated how we all are dependent to each other in the life cycle.

U.S. Secretary of State Hillary Rodham Clinton delivers a video message on bullying. [Go to http://video.state.gov for more video and text transcript.]

For the first time in history, a recorded song has been beamed back to Earth from another planet. Students, special guests and news media gathered at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, Calif., on Tuesday, Aug. 28, 2012, to hear "Reach for the Stars" by musician will.i.am after it wa...

A message from Israeli soldiers during the coronavirus lock down.

NASA's Space shuttle last mission lift off. Shuttle Endeavour went to space for the last time on May 16th, 2011 at 8:56 AM EDT. By Wednesday May 18th they will have reached the space station and their return back after a 16 day mission is expected by early June, 2011

This is my marriage proposal video to the love of my life. I cant imagine anyone telling us we cannot get married!

This series of photographs represent a moment of visual delight which was captured digitally. Enjoy the ride and share the photo essay with friends and family.

The first "It Gets Better" video of its kind: Featuring parents from PFLAG's support group for families of transgender children sharing their personal struggles to understand their child's needs and find support for both themselves and their families.