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Mercury had a rare celestial occurrence Monday, as stargazers saw the planet -- as a small black dot -- pass between the sun and Earth.

A U.S. World War II  fighter plane that crashed off the coast of North Wales and occasionally appears from the sands has received protected status, officials announced Monday.

KINIGI, Rwanda (AP) — Deep in the rainforest of Volcanoes National Park, a 23-year-old female gorilla named Kurudi feeds on a stand of wild celery. She bends the green stalks and, with long careful fingers, peels off the exterior skin to expose the succulent inside.

Since its launch in April 2018, NASA's Transiting Exoplanet Survey Satellite (TESS) has found a number of exoplanets, including a so-called "missing link" and an exoplanet with three suns. But a new study suggests the $200 million satellite may have already discovered the mysterious Planet 9.

The wreck of World War II submarine USS Grayback has been discovered off Japan 75 years after its sinking by a Japanese bomber.

A rare Patek Phillipe watch sold for more than $31 million at auction over the weekend, the highest price for a timepiece ever sold at an auction.

A 33-year-old orangutan granted legal personhood by a judge in Argentina is settling into her new surroundings at the Center for Great Apes in central Florida.

A deadly virus impacting seals may be spreading faster due to the loss of Arctic sea ice from warming temperatures.

Archaeologists in Greece have discovered five shipwrecks near the island of Kasos, which include an ancient shipwreck with five stone pyramid anchors.

Earth's hot, gooey center and its cold, hard outer shell are both responsible for the creeping (and sometimes catastrophic) movement of tectonic plates. But now new research reveals an intriguing balance of power — the oozing mantle creates supercontinents while the crust tears them apart. 

Scientists have invented a technique for constructing a fake rhino horn they hope will put a dent in the illegal horn market.

A ship that was sunk while transporting a cargo of liquor to the last Russian Czar is revealing its boozy treasure.

The slow decline of Alaska's Taku Glacier has become apparent in newly released photographs shared by NASA's Earth Observatory.

A volcanic undersea eruption has created a new Pacific island near Tonga while sinking a small island nearby.

15,000-year-old mammoth traps built by prehistoric humans have been discovered in Mexico.

The first case of "snake fungal disease" has been spotted in California, an ailment that causes snakes to become emaciated and have crusted scales.

A DNA analysis has confirmed the identity of a mysterious one-legged skeleton discovered beneath a dance floor in Russia earlier this year.  

Boeing has shown off its Moon crewed lander idea, one it says will require the "fewest steps to the Moon" as NASA looks to return to the lunar surface in 2024.

NASA has opened a previously sealed rock sample brought back from the Moon in 1972, marking the first time it will be analyzed.

Archaeologists have uncovered a 17th-century tunnel filled with indigenous rock carvings in the city of Ecatepec in Mexico. The tunnel likely served as part of a floodgate for a dike — through which water entered on one side and exited on the other — that was created to control the constant flooding that ravaged the lands.