Scott Kelly returns to Earth on Tuesday after spending a record-breaking year in space. His 340-day enterprise marks NASA's longest spaceflight and serves as critical prep-work and research for future Mars exploration.
NASA announces new findings about Mars' atmosphere and the evolution of the planet.
NASA has found evidence of liquid water on Mars. Science correspondent Miles O’Brien joins Judy Woodruff to discuss the inevitable question: does this mean there could be some form of life on the red planet?…
Monday on the NewsHour, President Obama and President Putin offer different visions about how to fight the Islamic State in Syria. Also: Donald Trump unveils his tax plan, Egyptian Abdel Fattah al-Sisi discusses his country’s turmoil, NASA finds streams of…
NASA solves part of the mystery about water on Mars…
What are the long-term effects of living in space? Astronaut Scott Kelly is now halfway through a year-long mission. In our NewsHour Shares video of the day, NASA offers a progress report, comparing Scott with his twin brother, retired astronaut…
A NASA-funded study is focusing on the psychological impact of a potential mission to Mars. For the past eight months, six people have been living in a self-sustaining 1,000 square-foot dome on the Mauna Loa Volcano in Hawaii, cut off…
Last month, NASA’s Curiosity rover captured a blue sunset on the Red Planet. The sight was poetic enough to inspire the rover to quote T.S. Eliot in a tweet.
One day, space explorers might stroll along the red rocks of Mars. But radiation exposure during the trip may wipe away their memories of home. A new report says that cosmic rays can change the physical architecture of the…
Science correspondent Miles O’Brien joins Judy Woodruff to discuss two space stories that center around the search for life and how it began. NASA’s Dawn spacecraft arrived in orbit around the dwarf planet Ceres, which scientists believe shows signs of…
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