On a mission to Mars, future astronauts will have to leave the protection of Earth’s magnetic field. As they head into deep space, high-energy galactic cosmic rays will pass through the hull of their ship and into their bodies. This might have dangerous—and lasting—consequences for the astronauts’ health.
Mars once featured a vast ocean that covered its northern hemisphere. New evidence suggests this Martian sea experienced at least two “mega-tsunamis” that were triggered by meteor impacts. Traces of these cataclysmic events can still be seen on the Martian surface, and they could still contain traces of ancient life.
Last night, SpaceX released some new information on what it will cost you to sent a satellite into orbit aboard their Falcon 9 or Falcon 9 Heavy rockets, anywhere from $62 to $90 million.
If we want to someday live on Mars, spaceships won’t be enough. We would need a Martian city—and this is how we might build one.
Mars may one day have rings similar to Saturn’s famous halo, new research suggests.
Over the next several nights, skywatchers will be treated to a cool celestial sight as Venus, Mars, and Jupiter hang out together in the morning sky. Here’s what you need to know about the rare conjunction and how to watch.
New data collected by the Curiosity rover shows that Mars was once quite Earth-like, featuring river deltas, lakes, and a warm climate. What’s more, the Red Planet may have been able to sustain liquid water at the surface long enough for life to emerge and evolve.