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The entire shoreline of a Southern California beach was closed Friday due to sewage-contaminated runoff flowing north from Mexico’s Tijuana River.

After 185 days aboard the International Space Station, two Russian cosmonauts and a NASA astronaut returned to Earth early Saturday morning. 

In an effort to fight insect-borne viruses like Zika, dengue fever and malaria, genetically modified mosquitoes are set to be released in the Florida Keys.

A volcano in Alaska's Aleutian Islands chain has continued to emit ash, the Alaska Volcano Observatory reported Thursday, prompting officials to raise the alert level.

One Tyrannosaurus rex seems scary enough. Now picture 2.5 billion of them. That’s how many of the fierce dinosaur king probably roamed Earth over the course of a couple million years, a new study finds.

One Tyrannosaurus rex seems scary enough. Now picture 2.5 billion of them. That’s how many of the fierce dinosaur king probably roamed Earth over the course of a couple million years, a new study finds.

New data released by a team of hundreds of international scientists offers a more comprehensive understanding of the supermassive black hole at the heart of the galaxy M87 and the system it powers.

New research methods using satellite data may be able to detect volcanic eruptions years in advance.

A popular chemical alternative to bisphenol A (BPA), known for use in plastic water bottles and food cans, is causing concerns that it could “seriously damage” human brains.

NASA's Jet Propulsion Laboratory (JPL) said Monday night that its Ingenuity Mars helicopter was in need of a software update and that a new date for its historic flight would be announced next week.

The Pentagon has admitted that a US Navy destroyer captured this eerie night-vision footage of mysterious flashing objects flying above it and another warship.

Egypt’s best-known archaeologist on Saturday revealed further details on a Pharaonic city recently found in the southern province of Luxor.

NASA's Ingenuity Mars helicopter is scheduled to lift off no sooner than April 14 in the first-ever attempt at powered, controlled flight on another planet, a delay from its initial planned launch date.

After a two-orbit journey that spanned for more than three hours, the hatches between the ISS and the Soyuz opened at 9:20 a.m. ET, flying above the South Pacific.

Archaeologists have discovered a 3,000-year-old “lost golden city” in Egypt — hailed by experts as the most important find since the tomb of Tutankhamun.

To the delight of social media users, NASA's Perseverance rover used a camera on the end of its robotic arm to snap a selfie with the Mars Ingenuity helicopter this week ahead of its historic flight mission.

NASA has debunked speculation over an image from Mars that appeared to show what many believed to be a "rainbow" or "dustbow."

NASA's Jet Propulsion Laboratory (JPL) and the U.S. Department of Homeland Security Science and Technology Directorate (S&T) have teamed up to create technology that will help locate firefighters inside buildings. 

Engineers at NASA have received the first weather report from Mars' Jezero Crater, where the agency's Perseverance rover landed in February.

SpaceX founder Elon Musk explained why the Starship prototype SN11 went up in flames last week.