Some negative consequences of space exploration include the emission of ozone-depleting substances and the presence of man-made debris in the earth's orbit. In addition, astronauts may experience some negative physical effects of space exploration.Know More
Space exploration can have a negative impact on the environment. When rockets launch into space, their engines let out gases and debris such as aluminum oxide and soot. These substances can damage the ozone layer and contribute to global warming.
However, space travel is not nearly as commonplace as car or airplane travel, which also release harmful substances into the atmosphere. Therefore, space exploration does significantly contribute to global warming. As space exploration becomes more commonplace, scientists must tackle environmental issues associated with rocket launches.
In addition to gases and particles, man-made objects often get left behind in the earth's orbit. There are over 500,000 pieces of orbital debris in orbit, according to NASA. Orbital debris includes broken spacecraft, pieces of launch vehicles, pieces of spacecraft and satellites that break off during explosions, pieces of paint and used batteries. Orbital debris does not significantly affect the earth itself, but it does pose a small risk to astronauts working in space. The U.S. and other countries such as Russia and China have guidelines in place to reduce orbital debris.
Space exploration can have negative health consequences to astronauts. Zero gravity conditions can cause bones to release less calcium, causing them to become brittle. Radiation can also impact bones. Floating also causes back and lower body muscles to become weaker, as they are not used in the same way.
In addition, space exploration can cause changes to the body's balance system and inner clock. Astronauts must undergo a period of adjustment after returning to Earth.Learn more about Space Travel
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 environmental resource management, consumer goods production, public safety, transportation and medicine.Full Answer >
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 geopolitical and military rivalry and does not improve societies. The Congressional Budget Office cites safety concern as the main argument against space exploration.Full Answer >
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.Full Answer >
Positive attributes of space exploration include identifying potentially habitable planets, locating non-renewable resources and driving technological advancement; however, space exploration has negative attributes, such as exposure to radiation and vacuum, and a high cost of access. The continued exploration of space by humans demonstrates that the rewards outweigh the risks.Full Answer >