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.

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...

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.

Astronomers using the James Webb Space Telescope have discovered a galaxy that could make us revise our cosmology models. It's a galaxy named CEERS-1749, which could be the farthest galaxy to date. Astronomers have nicknamed this galaxy Schrodinger's galaxy because it could be at two places at once....

We don’t yet know what the James Webb Space Telescope will uncover. Will we get answers? Will we have more questions? One thing’s certain: The story of us is a never-ending quest for knowledge.

NASA's New Horizons spacecraft has begun beaming back photographs of the surface of Pluto as it approaches the dwarf planet. . Report by Conor Mcnally.

Scott Kelly and his twin brother, Mark Kelly—also an astronaut—were the subjects of the study that sought to find out exactly what happens to the body after a year in space. Scott stayed on the International Space Station from March 2015 to March 2016, while Mark remained on Earth. This was the fina

Launched nearly 28 years ago, the Hubble Space Telescope has changed our understanding of the cosmos, allowing us to calculate the age of the universe and the rate at which it is expanding. Hubble has allow us to peer back to almost the origins of the universe, to locations more than 13.4 billion li...

Iron Dome is a mobile air defense system in development by Rafael Advanced Defense Systems designed to intercept short-range rockets and artillery shells. The system was created as a defensive countermeasure to the rocket threat against Israel's civilian population on its northern and southern bord...

The European spacecraft Rosetta has become the first ever to catch up with a comet. It is a landmark step in a decade-long mission that scientists hope will help unlock some of the secrets of the solar system. Rosetta will accompany comet 67P/Churymov-Gerasimenko on its trip around the sun and land ...