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- The solar system is filled with a barrage of comets and asteroids. Some of these cross the paths of the other planets as well as the earth s. The earth travels around in a swarm of projectiles. Comets and asteroids can and do strike the surface of the earth.
- Earth probably began about 4.5 billion years ago. A history of this life on Earth is recorded in fossil remains and traces of past life. It is a record of evolution for both life and the planet. Life and the planet have co-evolved, with life causing changes to the planet which in turn drive changes in life.
- The universe is a shooting gallery and earth is the bullseye. The earth is always under threat of a doomesday asteroid that will wipe out civilization. There are over one thousand asteroids traveling toward earth and only three quarters are accounted for.
- These rocks didn?t form any planets and were stuck floating around space on their own or in the gravitation of the asteroid belt. This belt is approximately 300 million miles from the Sun and it contains thousands of asteroids some being miles in diameter.
- So, what is the Sixth Extinction? When is it coming and what is its cause? It is happening now, and we, the human race are its cause explains Richard Leakey. This phenomenon Leakey argues, is easily comparable with the big five biological crisis’ of geological history, except this one is not being caused by global temperature change, regression of sea level, or asteroid impact.
- Mars is the planet that is the closest geologically to our own. Still we know little about the planet. All the information that we have is from what we see. We can speculate about the geology of the planet but we will never know for sure what the planet is really made of until we physicallygo there.
- My Last Day Sitting on my couch in my apartment, scanning thorough the cable TV channel, I found an interesting topic about asteroids on CNN. Not realizing what is going on I kept on scanning through the channels and ended up watching the Spiderman cartoon series.
- Controversy surrounds the extinction of the dinosaurs. According to one theory, dinosaurs were slowly driven to extinction by environmental changes linked to the creeping withdrawal of shallow seas from the continents at the end of the dinosaur era. Proponents of this theory propose that dinosaurs dwindled in number and variety over several million years.
- Mining in SpaceOn December 10, 1986 the Greater New York Section of the American Institute of Aeronautics and Astronautics (AIAA) and the engineering section of the New York Academy of Sciences jointly presented a program on mining the planets. Speakers were Greg Maryniak of the Space Studies Institute (SSI) and Dr.
- After doing this enough times one will realize it is nearly impossible to accurately predict a leaf?s travel downstream, as the slightest change in its position can result in a severe deviation from it?s original path.
- Our understanding and our modern perception of our solar system, the Milky Way, has been drastically reshaped from the corresponding perception of only a few hundred years ago. Our Solar System, the Milky Way is probably about 4-5 billion years old. Only in the last 400 years or so have we realized that the earth is not the “center”, and that in the Universe alone there is an immense 200 billion “Suns” in a galaxy like our own.
- Meteors are very common throughout outer space. They are being whipped around our solar system in every orbit possible. Normally they are peacefully and serenely floating through space, but one just has to look at the cratered face of our moon or Jupiter?s moon Callisto to see that more than a few meteor?s journeys through space have been interrupted.
- In this paper I plan to defend the position that impact of technology on the society has far more positive sides than negative. One could not possibly imagine how a life would be without a TV set, automobile, birth control pill, etc. Technology is what makes these goods available for us to enjoy at our discretion.
- I have been selected as one of five people to go on a mission to Neptune; we are to attempt to gather rock samples from two moons, Triton and the very irregular shaped moon Proteus. We also must gather samples from, the rings of Neptune and we need to gather readings on the three major storms on Neptune (the small dark spot, the great dark spot and scooter.
- The Solar System consists of the Sun, the nine planets and their satellites; the comets, asteroids, meteoroids, and interplanetary dust and gas. It is composed of two systems, the inner solar system and the outer solar system. The inner solar system contains the Sun, Mercury, Venus, Earth and Mars.
- Nobody can really say what actually eliminated the species, although everyone has their very own idea. Asteroid impact, atmospheric changes (hot to cold), catastrophic eruptions and astronomical events (supernovas etc.). Some have ventured that early mammal inhabitation slowly ?pushed? the dinosaurs to extinction.
- Theories span a vast spectrum of causes including: sea level change, supernova explosions, climate change, and on and on.
- Think of a world which existed 290 million years ago. As you look out over the terran in front of you, you think that you are on an alien planet. You see volcanoes spewing ash and lava. Beside them is the ocean which is swarming with many different species of echinoderms, bryozoans and brachiopods.
- In addition to that there were many bony fish, sponges, snails, clams, and sea urchins became extinct. Paleontologists have proposed scenarios that could have caused these extinctions.
- We usually divide the planets into two groups, but we have two ways of doing this. One way is by location in the Solar System, and the other is by what they are like. The planets are located in the inner and outer parts of the Solar System, so two groups are then formed.