Do aliens exist? NASA astrobiologists lDr. Lindsay Hays is answering one of the most profound questions ever.
That's a really interesting question and one that we have been trying to understand and explore and and figure out for a really long time. NASA has sent five rovers and four landers to the surface of Mars. In addition to that, our orbiters have been outfitted with some amazing cameras to take pictures of the whole surface of the planet. And we've only explored a tiny fraction of Mars.
And that's only one of the promising bodies to look for life in our solar system. There are icy moons in the outer solar system like Enceladus and Europa that look like they may have subsurface oceans that could be habitable. And then that's just what's in our solar system. The more exoplanets we find around other stars, the more we learn about how many different environments could exist for life.
Dr Dartnell – who is designing laser eyes for the European Space Agency's ExoMars Rover – said: "It's possible actually that the chances of life today are better on Europa than on Mars. Because even though we see signs of trickling water on Mars today – on Europa there is MUCH more. "It's probably much more habitable."
