I think that we should be concerned about the things that are out in space. Because if we have the power to look more into and have the backgroung and the tools to why not. Also I think that it is interesting to learn about.
On November 14, 2008 there were 997 potentially hazardous asteroids. Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.
Coronado's Personal Solar Telescope--PST for short--is a great way to get started with solar astronomy. The telescope is small, portable, and inexpensive--but it is a big performer. Looking through the eyepiece of a PST you can see vast dark solar filaments, red glowing prominences, and seething active regions where sunspots break through the sun's surface.
The comets have elicted orbits and they come very close to the earth and then go back out as far as pluto. Shoemaker-Levy 9 collided with Jupiter. This is the first collision of two solar system bodies ever to be observed, and the effects of the comet impacts on Jupiter's atmosphere have been simply spectacular and beyond expectations. Comet Shoemaker-Levy 9 consisted of at least 21 discernable fragments with diameters estimated at up to 2 kilometers.
No comments:
Post a Comment