"We realize there will be impacts to NASA missions, but we understand that our top priority is the health and safety of the NASA workforce," said the space agency's administrator, Jim Bridenstine.
The rover will search for signs of past microbial life on Mars, while also investigating the planet's climate and geology.
"These selected missions have the potential to transform our understanding of some of the solar system's most active and complex worlds," NASA's Thomas Zurbuchen said.
During the mission, Koch took part in what was the first all-female spacewalk alongside NASA astronaut Jessica Meir.
Fixing problems on Voyager is a tricky business given that it is currently located around 11.5 billion miles from Earth.
Lunar regolith—dust, soil, broken rock and related materials found on the moon's surface—actually consists of between 40-45 percent oxygen.
Aldrin, alongside fellow Apollo 11 crew member Neil Armstrong, touched down on the lunar surface at 8:17 p.m. UTC on July 20, 1969.
The dummies are fitted with more than 5,600 sensors each, which will measure exposure to space radiation.
Hibernation technology may enable mission designers to reduce spacecraft mass by around a third.
The Exploration Extravehicular Mobility Unit builds on the designs of spacesuits currently used by astronauts when they conduct spacewalks outside the International Space Station.
The Mars 2020 mission is scheduled to launch in July 2020, and it is expected to reach the red planet in February 2021.
The building was constructed as a facility to quarantine astronauts and the material they brought back from the moon during the Apollo program.
"The LightSail 2 mission is a game-changer for spaceflight and advancing space exploration," said Bill Nye, whose Planetary Society funded the project.
Settlements on the moon where astronauts will live permanently or semi-permanently are closer to becoming a reality than ever before.
The technology has the potential to revolutionize navigation in space and usher in a new era of exploration to far-flung worlds.
The space agency is hoping to put the first woman on the lunar surface by 2024.
"Mars is waiting to be discovered, not by clever robots and rovers, but by living, breathing, walking, talking, caring and daring men and women," the ex-astronaut wrote.
Ultima Thule is located around 4 billion miles away from the Sun.
Retired NASA astronaut Bill Anders also said that sending humans to Mars was a "stupid" idea.
Parker has surpassed the previous close approach record set in April 1976 by the German-American spacecraft Helios 2.
Venus's surface is an inhospitable wasteland. But its upper atmosphere is much like Earth.
A new study suggests that the Red Planet could have supported subsurface microbes.
Musk's Mars ambitions have started to look more like fantasy.