For an explanation, see the main splats page
SPLATS about the Earth in space
The principles of Earth in space
- The Earth is made up of different layers: the crust, the mantle and the core. The crust is made up of separate tectonic plates that move across the surface.
- Every body in the solar system has an albedo, a reflectivity factor which makes some objects easier to see so long as they are bright, even when they are small.
- All planets have a natural albedo, and this influences their overall temperature. When there are more clouds, the Earth gets colder as more heat is reflected.
- The Van Allen belts are layers of charged particles trapped by the earth's magnetic field, one about 3200 km from the Earth, the other at 15,000 to 19,000 km.
- The Moon takes a lunar month, a little more than 29 days, to make one complete passage around the Earth. The Earth's rotation makes it seem much less.
- Strictly, the Moon does not in fact orbit the Earth, but the Earth and the Moon both orbit a common point in space which is their combined centre of gravity.
- As the Moon works its way around the Earth, relative to the Sun, so we see different parts of the Moon's 'day', from full 'day' to full 'night' and back again.
- Meteors are quite common in space. A meteorite is a meteor fragment that reaches the Earth's surface, but most meteors burn up in the atmosphere.
- An asteroid striking the earth could cause massive extinctions, as has happened before. The impact would produce clouds of dust that would chill the planet.
This file is http://members.ozemail.com.au/~macinnis/scifun/, first created on February 23, 2009. Last recorded revision (well I get lazy and forget sometimes!) was on February 23, 2009.
©The author of this work is Peter Macinnis, who asserts his sole right to the product as it is packaged here, recognising that many of the ideas are common. You are free to use this as a model to do your own version. Copies of this whole file or site may be made and stored or printed for personal or educational use. You can contact me at firstname.lastname@example.org, but only if you add my first name to the front of that email address -- this is a low-tech way of making it harder to harvest the e-mail address I actually read.
This site had 219,000 hits on the index page from 1999 to January 2007 and an unknown number on other pages. In January 2007, a combined counter was placed on all of the pages, counting page hits which now total