Churchill Science

More great questions from the Great Wall…

During yesterday’s launch, the space shuttle suffered some damage. Some foam tiles, which protect the shuttle from burning up when it enters Earth’s atmosphere, have fallen off or were scuffed. So far, as this news report says, NASA doesn’t know how much damage there is. There are also different options for fixing the damage if it turns out to be a big problem.

Try rubbing your hands together very fast – you can feel the heat building up. This is what happens when a flying object like a spaceship lands on a planet or moon with an atmosphere. The ship rubs against the air in the atmosphere and a LOT of heat is built up. This is because of a force called friction. It’s super-important to have a heat shield so that the ship won’t burn up. A few years ago, the space shuttle Columbia was destroyed because of damage to its heat shield.

221 played this game on Friday… we collected all 12 cards with no problem! So we moved on to something a bit more challenging…

If you want to make this game more challenging for yourself, try filling them in in reverse order, or from the middle out…

Hopefully we’ll be posting more solar system games soon!

Ever wondered how many Earths would add up to one Jupiter? How many Saturns would balance out one Sun? Find out with one of our favorite websites ever, the Planet Mass Comparison. Click one of the pictures below to try it yourself:

One Neptune = 9,501 Plutos!

14 Earths = 1 Uranus.

OK, OK, there’s actually no cosmic scale out in space weighing planets. This is actually measuring mass, which is a bit different than weight. Weight depends on where you’re standing. For example, you’d “weigh” a LOT more if you were on Jupiter or the Sun. (Not that you would survive long enough to get on a scale.) You even weigh a tiny bit less when you’re up in the mountains than you would at sea level. But you are the same size, with the same amount of “matter” inside your body, no matter where you are.

The Cluster B classes have been studying the planets in our own solar system and finding out why Earth is so unique and special. But could there be planets somewhere else in the universe that we could live on? Recently scientists announced that they have found some…

The red glowing object is Gliese 581, a red dwarf star. There are several rocky planets orbiting it, each named for the star – Gliese 581c, Gliese 581d, and Gliese 581e. Last week, scientists announced that “d” and “e” were the planets most like Earth that have ever been found.

Here’s a video showing the whole system:

This next video shows some planets that orbit around other stars, that could be like our own planet Earth. These stars are very far away and it is currently too hard to take a picture of them, much less go there. The video also talks about why Venus and Mars didn’t end up having life, the way Earth did.

206 tried this game this morning… We were able to create one fish that survived until the end. One other fish ran out of energy, and one got eaten!

Click here to play the game!

This is a very important question because Venus’s atmosphere is full of carbon dioxide, which caused global warming. Could the same thing happen to Earth if we keep putting so much carbon dioxide into OUR atmosphere?