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.Know More
Space exploration is not cheap, and developing first-of-a-kind spacecraft is too expensive for most nations to even consider. During the Apollo program, some questioned whether money spent on sending people to the moon would be better spent on education, fighting poverty and developing new medication. The space shuttle program had a total cost of $209 billion. Proponents of space travel counter that technology developed during these programs makes the costs worth spending.
Others argue that space exploration leads to the development of dangerous weapons. Ronald Reagan received a considerable amount of criticism for his "Star Wars" initiative of weaponizing satellites and other space technology. In recent years, however, no nations have expressed interest in these types of systems.
Steven Hawking famously claimed that humans should consider dangerous alien species before reaching out to extraterrestrial life. In his mind, it is reasonable to imagine an alien species that seeks out alien planets for resources. Space exploration would make the earth more visible and more likely to attract unwanted attention.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 >
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.Full Answer >
The life support system installed in the space station helps astronauts live in space for extended periods of time. While in space, the life support system provides oxygen and filters out the carbon dioxide exhaled by the astronauts. In addition, astronauts go through rigorous training regimens to ensure that their bodies can handle the conditions.Full Answer >