Space Exploration is the ongoing investigation of the environment beyond Earth's atmosphere. It involves the in-depth examination of relatively close celestial bodies such as the sun, planets and moons, as well as the distant observation of stars, galaxies and other cosmic phenomena.
Space exploration is important because it helps facilitate communication, better research of the environment and gives hope for the future. The National Aeronautics and Space Administration is the main body charged with space exploration in the United States.
Some criticisms of space exploration include that it wastes taxpayer money, which could be used to address problems on Earth such as climate change and poverty. Additionally, most of NASA's space exploration programs are unsuccessful. ScienceDaily notes that space exploration is used as a tool for g
All the advantages of space exploration stem from the fact that it creates an opportunity to discover unknown facts and generate valuable knowledge about the universe. Several discoveries made during space exploration have helped advance industrial productivity, computer technology, agricultural and
Science Explorer textbooks are 16 small textbooks in a series published by Prentice Hall to teach middle school science. The lead author is Michael Padilla.
According to NASA, humans explore because of an innate desire to learn the world around them. The urge to explore was ingrained in the psyche so that human ancestors could find places that were abundant in food, water and other resources necessary for survival. This primordial desire to explore the
In the natural or hard sciences, a closed system is one that does not interact with others. There are also open and isolated systems.
Space exploration is expensive, and many claim that money is better spent fixing problems at home. It can also lead to technology that yields weapons. Some have even suggested that space exploration risks drawing the attention of dangerous aliens.
As far as humans can tell, space is infinite; it has no end or borders. Scientists believe that space will always seem infinite to humans for two reasons. First, our investigation of space has never found an edge (or any indications of an edge). Second, measurements show that space is expanding fast
Rather than being composed of anything, outer space is loosely defined as the void between the planets, stars and other objects in the universe. While not a perfect vacuum, scientists consider outer space to be a hard vacuum, with a pressure level close to zero. Nevertheless, space is not completely