2015 marks 50 years of successful NASA missions to Mars starting with Mariner 4 in 1965. Since then, a total of 15 robotic missions led by various NASA centers have laid the groundwork for future human missions to the Red Planet. The journey to Mars continues with additional robotic missions planned...

This time lapse footage of the earth during sunrise accross te planet was taken by the International Space Station on October 3, 2015. NASA, 2015

Space Shuttle Atlantis is on launch pad 39A at the Kennedy Space Center. The orbiter made the 3-1/2 mile rollout from the Vehicle Assembly Building May 15, 2011. It's final and iconic mission is scheduled for July 2011 with four crew members aboard.

Have you ever wondered why some telescopes are launched into space while others are built on remote mountain tops? What is actually the best for astronomy? Here we provide a ringside view of the fight for the elusive photons from deep space - is it a battle of the telescope giants?

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

This video zooms into the core of a rich star-birth region called the Lagoon Nebula, located in the constellation Sagittarius in the direction of our Milky Way galaxy’s central bulge.

The first American woman in Space talks about her historic flight on NASA's 50th anniversary. She flew aboard Space Shuttle Challenger in June 1983 on the STS-7 mission.

Jupiter has a lot going on, with massive storms, intense winds, auroras, and severe temperature and pressure extremes. The James Webb Space Telescope of NASA has now taken fresh images of the planet. Webb's Jupiter observations will provide scientists with much more information about Jupiter's inner...

The Double Asteroid Redirection Test spacecraft will deliberately crash into a near-Earth asteroid to try and knock it off course. Scientists at NASA and Johns Hopkins Applied Physics Laboratory hope the DART mission could help us save Earth from a catastrophic impact.

SpaceX's Inspiration4, the first all-civilian spaceflight in history splashes down in the Atlantic Ocean after completing a three-day orbital flight around the Earth.