Exploring the Solar System
Dominic Ford reports from the European Planetary Science Congress, where he heard about the latest missions to Mars and the Moon. Lewis Dartnell explains how the ExoMars mission, due to land on Mars in 2018, will go about looking for signs of lifeforms that may have died out billions of years ago. Dina Pasini discusses her more speculative ideas about how the life we see on Earth could have started on Mars. And Bernard Foing and Jessica Barnes discuss what we're still learning about the Moon. Plus, we have more answers to your space science questions.
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If life on Mars died out billions of years ago, what chemical tracers might still survive?
Some theorists think life could have started on Mars, and have come to Earth on a meteorite. But is that feasible?
I would like to know if you can make any astronomical sightings during the day.
Robert Massey from the Royal Astronomical Society gave me a round-up of the latest astronomy news.
As our closest celestial neighbour, the Moon is an ideal place for testing new technologies in space.
Australian radio astronomers are asking volunteers at home to donate computer power to help process their data.
In recent years, its become clear that the Moon has much more water beneath its surface than previously thought. Where did it come from?
I've just been listening to this week's programme, with the piece about mapping the milky way using parallax. This left me with two questions:
- To observe something moving because of parallax, you need to see the movement against a more distant background. What are they usin...