By Jonny Lupsha, News WriterThe International Space Station had its 20th birthday on November 2, The New York Times reported. Unfortunately, space exploration is expensive and slow. The International Space Station has seen a range of visitors and residents over the 20 years that it has been in operation as international scientists collaborate on advances in scientific knowledge. Photo By Vadim Sadovski / ShutterstockAs The New York Times pointed out, the International Space Station has had an exciting 20-year history. Martian Time-SlipOne problem that involves the expense of continued space exploration is the time it takes to get to Mars.

Source: International New York Times November 10, 2020 14:48 UTC