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The Arctic tundra has switched from a carbon sink to a source of emissions, according to a NOAA report.

Weather permitting, the gas giant will not only be brighter than most other stars and planets in the evening sky, but will also be visible all night long.

Two European satellites have launched to potentially create an artificial solar eclipse. NBC News' Gadi Schwartz speaks to astrophysicist Dr. Paul Sutter about what they hope to gain from the launch and how it will work.

The next Artemis mission, which will send four astronauts on a flight around the moon, will be delayed until 2026, NASA announced. The program is already years behind schedule.

The National Weather Service issued the warning for Northern California and parts of Southern Oregon after the quake was detected off the coast of Ferndale, California.

Global temperatures in the last two years have been higher than scientists anticipated. That may be because cloud cover has decreased, a study suggests.

Researchers think the southern giant hornets likely made a nest, but they are still looking for it.

Orcas were previously seen sporting salmon on their heads in the late 1980s, but it's not clear what the behavior means.

Isaacman has flown to space twice on commercial SpaceX missions but has not worked in the federal government.

An unidentified disease has killed 79 people and sickened 376, according to the Democratic Republic of Congo's Ministry of Public Health, Hygiene and Social Security.