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85K views · 1.4K reactions | On Mars, astronauts would need to live and work in three-eighths of Earth’s gravitational pull for up to two years. Additionally, on the six-month trek between the planets, astronauts will experience total weightlessness. Discover what we're doing to protect humans from this hazard of spaceflight: https://go.nasa.gov/2od586t | NASA - National Aeronautics and Space Administration | Facebook

194K views · 7.3K reactions | Over a six-hour period on April 21, 2015, NASA's Solar Dynamics Observatory (SDO) observed a wing-like prominence eruption. SDO views the sun in various wavelengths of the extreme ultraviolet, including 171 (shown in gold) and 304 (shown in orange) angstroms. Credits: NASA/SDO Genna Duberstein (USRA), Lead Producer, Editor Tom Bridgman (GST), Lead Data Visualizer | NASA Space Alerts | Facebook