Nuclear energy is considered safe for the environment and safe for humans. Radiation levels will probably never reach a high enough point to cause radiation sickness or cancer (Epstein 1). It is extremely unlikely for a large amount of radiation to be released because of the numerous kinds of shielding and containment mechanisms that are built into and around the power plants (Epstein 1). It has been produced for over half a century and there are still no known radiation related deaths (Pietrangelo 1). These power plants produce no pollution (Alexander 1).
There is no actual scientific mean of accurately predicting when the next stellar explosion will be, but one thing is sure, the stars within the Milky way galaxy haven’t come close to reaching the end of their life span, therefore Earth and it’s inhabitants are safe from supernovae for the time being. However, this isn’t necessarily true regarding stars throughout the universe that could in fact pose a significant threat to the potential life forms out there. So are there other life forms inhabiting planets in galaxies throughout the universe? This is a question that remains unanswered to this day, regardless of our advanced satellite technology. Regardless of our current inability to detect extraterrestrial life forms, they shouldn’t be assumed to be non-existent for it could be that we simply haven’t reached the technological advances necessary to detect them.
Life Cycle of a Star Pamela Hughes May 17, 2011 SCI/151 Norman Stradleigh Life Cycle of a Star On a clear dark night, one can see thousands of stars. We can see many stars but could never dream of being able to count them all. Even though each individual star is unique, all stars share much in common. The Sun, which is the source of virtually all light, heat, and energy reaching the Earth, is the nearest star. Today, we know that stars are born from interstellar gas clouds, shine by nuclear fusion and then die, sometimes in dramatic ways.
Kent already had natural powers when he was little but his true powers were gained through the sun rays of the Earth. He possesses many powers that may include: the ability to fly, ability to outrun a train, ability to lift a 1 ton- truck and many others! As readers gain more knowledge about his powers, they aren’t going to ruin the movie by just saying that a human can never possess super powers, instead they just act like they don’t know and care and move on to enjoy the rest of the movie. The ambiguity that regards the suspension of disbelief is absent in the movie, “Superman” because Kent is not from the same world and hence he is not like an average human on planet earth. Basically, you can categorize him as a different race just like an alien.
One discrepancy that was found in the pictures on the moon was that there were no stars. When looking at the picture of Armstrong and Aldrin on the surface of the moon, stars are not visible. Non-believers say that this is one result of the picture being taken on secretive grounds rather than actually up in space. On the other hand, believers, including Plait, say that just because we can see stars from the Earth, does not mean we can see it from the moon. The Earth and moon are two completely different places where conditions are different for each place.
Spending on space exploration is not justified when a fraction of that cost could help to eliminate poverty on earth The sky and the world beyond has always fascinated humans. Drawings of constellations dating back thousands of years prove that this fancy is not new born. And as time and findings progressed, exploration of this aspect grew and has a reached a stage where a manned mission to neighboring planet Mars is being planned. What is the need of exploring space? The advantages are plenty.
Movies like, "Terminator 2", "Deep Impact", "2012" or one of my favorites, "Armageddon". In each movie, the world is going to, or is coming to an end in one way or another. In each movie as well, it seems like there is always an American hero waiting in the wings to save the day and or mankind. This is just another example of Americans supporting the "Chosen Nation" myth. In the movie "Armageddon", a huge asteroid was on its way to destroy the Earth and everyone that lived on it until an American telescope saw it in space and an American oil driller saved the day!
Scientists have discovered this through implementing adaptive optics, which are used in astronomical telescopes to pierce through the blur of earth’s atmosphere in order to see the center of each galaxy. A black hole’s formation involves the gravitational collapse of a massive star, which is also known as a supernova explosion. Black holes range in masses from three (average, small black holes) to an incomprehensibly large number (supermassive black holes: the largest in the galaxy). The Milky Way’s supermassive black hole is 3 million solar masses (equivalent to 3 million suns)!
Other scientists say that the repositioning of the world’s landmasses was disastrous for dinosaurs. As continents heaved upward, ocean currents were redirected and global sea levels fell. The Interior Seaway, which once divided North America in half, simply drained away as the Colorado Plateau rose thousands of feet. Though all these theories are well supported and make a lot of since, I think the continental drift theory is the better of them. First, an asteroid explosion so big to wipe out all the dinosaurs most likely would have made a bigger impact on the Earth.
Scientists have theories that one or a few meteors hit the Earth, but they cannot be sure due to the lack of evidence on the matter. The element, Iridium, plays a key role as vital evidence in these theories. The main theory to the extinction of dinosaurs is called the Alvarez hypothesis, first created by Luis and Walter Alvarez in 1980. This hypothesis states that the mass extinction of life on Earth sixty-five million years ago was due to one big meteor colliding with the Earth. The team of scientists, led by Walter Alvarez and his son Luis, went to the Yucatan Peninsula, where proof of a giant meteor strike is present.