Apologies

Sorry for the break in posts, I've been meaning to put things up for ages.  From what we've covered so far in Alien, you need to know how forces act on rockets on Earth and in Space, what makes up the rest of the Universe and our Solar System (and be able to name different things like planets, galaxies, stars etc.), remember what all living things on Earth are made from (it starts with C, which is also its chemical symbol), and what extremophiles are. 
Here is the extremophiles video we saw in class :

Make sure you remember that extraterrestrials probably don't look like little green men, but are small bacteria like these ones living in extreme conditions.  Conditions on other planets are very different to Earth (temperature, atmosphere, soil/rocks) and we can send landers like the ones we made in class to test what these conditions are.  Make sure that you're up to date with things as we'll be having a short test on this unit next week.