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 >
NASA beams live and recorded video content into low-earth orbit, allowing astronauts to watch live video in outer space. A special broadband connection carries the video into space on an as-requested basis. Astronauts watch television and other content when they are not working.Full Answer >
Typical orbital paths for space shuttle missions covered regions between 57 degrees north and 57 degrees south of the equator and altitudes of between 155 and 600 miles depending on the mission profile. Orbital speeds were on the order of 17,500 mph, resulting in one orbit approximately every 90 minutes.Full Answer >
According to data collected by the University of Calgary, space begins and the Earth's atmosphere ends at 73 miles above the Earth's surface. However, other countries and agencies have a differing opinion on where space begins.Full Answer >