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....

As 2015 comes to a close we look back at an exciting year of reaching new heights and revealing the unknown for the benefit of humankind.

A Soyruz rocket launched NASA's Scott Kelly and two Russian cosmonauts into space for what will be a year-long mission aboard the International Space Station. It is NASA's first-of-its-kind study of identical twins to learn more about how long-term spaceflight affects the human body — by sending one

On Monday, scientists announced the first-ever observation of a cosmic event using both gravitational wave detectors and conventional telescopes. They witnessed a kilonova, a violent, brilliant explosion that occurs when two neutron stars collide. The discovery was a massive undertaking. Thousands o...

US space agency NASA has warned that a huge 1,082 ft asteroid bigger than the Eiffel Tower will break into Earth’s orbit in just over a week.The space rock is heading our way and should skim past us on December 11. NASA has its eye on Asteroid 4660 Nereus because it’s well over 492 feet long and wil

How will the Universe die? Everybody dies. The universe too? Well, probably. What are the current theories about the end of everything? And how creepy exactly? Very creepy but there is still hope and billions of years in between.

NASA's Juno spacecraft has been orbiting Jupiter since July, 2016. But only just recently have scientists had a chance to analyze all of its data — and the results are painting a different picture of Jupiter than what anyone expected. Juno is also returning images unlike any we've ever seen, includi

NASA’s New Horizons spacecraft is speeding towards Pluto for the first-ever flyby on July 14, 2015. Scientists are eager to collect data on the dwarf planet’s chemical and atmospheric makeup, and the Ralph spectrometer will do just that. Instrument scientist Dennis Reuter discusses Ralph, Pluto, and

A small saucer-shape capsule carrying a half-pound of rocks and dust collected from an asteroid called Bennu is expected to slam into Earth's atmosphere at a blistering 27,650 mph on Sunday and then parachute down to the ground. NASA senior scientist Amy Simon joined CBS News to discuss the purpose ...

On March 30, 2009, NASA unveiled the new Orion Spacecraft in front of the Smithsonian Air and Space Museum. The module is still undergoing tests, but is planned to make its first journey to the International Space Station in 2015.