Tag Space & astronomy
In the cosmos, all celestial objects - planets, stars, galaxies and clusters of galaxies - have magnetic fields. On Earth, the magnetic field of our home planet is most easily observed in a compass where the needle points north.
Space is probably infinite, but we can see only the part that contains stars or galaxies whose light has been able to reach us, says…
“We don’t know,” says Ed Churchwell, professor of astronomy. “We know it’s a very large number.” It’s in the hundreds of billions, Churchwell…
Dane County residents have a new way to appreciate the solar system, thanks to Planet Trek Dane County, which offers pedestrians and bikers a chance to discover the 11 biggest objects in the solar system at the correct scale of size and distance.
Leap days appear every four years or so, including this year, and they are needed because one orbit around the sun does not occur in an exact number of days, says Jim Lattis, director of UW Space Place, in the UW–Madison astronomy department.
Satellite images provide a dramatic view of the Earth and its atmosphere. For timely views of winter weather in Wisconsin or wild fires in California, Google Earth users can now access the most recent high-quality satellite images generated at the Space Science and Engineering Center.