The Arctic tundra is one of the coldest biomes on Earth, and it's also one of the most rapidly warming.
The Academy of Television Arts & Sciences announced the two award nominations for NASA on July 16.
A newly discovered comet could only be the second intersteller object scientists have found after 'Oumuamua.
The five missions between 2022 and 2024 will be operated by private companies, according to NASA's plans.
NASA's Cassini spacecraft has revealed that a day on Saturn is just over 10 and-a-half-hours-long.