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San Diego Zoo Wildlife Alliance

DNA analysis of soil from paw prints could help save Sumatra's tigers

See photos from the Apollo era like never before

NASA astronaut and Expedition 68 Flight Engineer Frank Rubio is pictured during a spacewalk tethered to the International Space Station's starboard truss structure.

Astronauts will give the space station a power boost during Saturday spacewalk

This color picture of Mars was taken July 21--the day following Viking l's successful landing on the planet. The local time on Mars is approximately noon. The view is southeast from the Viking. Orange-red surface materials cover most of the surface, apparently forming a thin veneer over darker bedrock exposed in patches, as in the lower right. The reddish surface materials may be limonite (hydrated ferric oxide). Such weathering products form on Earth in the presence of water and an oxidizing atmosphere. The sky has a reddish cast, probably due to scattering and reflection from reddish sediment suspended in the lower atmosphere. The scene was scanned three times by the spacecraft's camera number 2, through a different color filter each time. To assist in balancing the colors, a second picture was taken of z test chart mounted on the rear of the spacecraft. Color data for these patches were adjusted until the patches were an appropriate color of gray. The same calibration was then used for the entire scene.

NASA's Viking 1 may have landed at the site of an ancient Martian megatsunami

Toxoplasmosis, an infection caused by the T. gondii parasite, is best known in cats but it might also be affecting wolf behavior.

'Mind control' by parasites influences wolf-pack dynamics in Yellowstone National Park

NASA's historic moon mission enters the final leg of its journey

Images of Saturn's moon Titan, captured by NIRCam on November 4, 2022. Left: Image from F212N, a 2.12-micron filter sensitive to Titan's lower atmosphere. The bright spots are prominent clouds in the northern hemisphere. Right: Color composite image from combined NIRCam filters: Blue=F140M, Green=F150W, Red=F200W, Brightness=F210M. Several prominent surface features are labeled: Kraken Mare is thought to be a methane sea; Belet is composed of dark-colored sand dunes; Adiri is a bright albedo feature.

Webb telescope spies clouds beneath the thick haze of Saturn's moon Titan

Original slate plaque modelled after an owl in the Museo de Huelva. Replica of the Valencina Slate Plaque with inserted owl feathers on the two drilled holes at the top of the plaque.

Popular toy of prehistoric children revealed by new research

This artist's impression illustrates how it might look when a star approaches too close to a black hole, where the star is squeezed by the intense gravitational pull of the black hole. Some of the star's material gets pulled in and swirls around the black hole forming the disc that can be seen in this image. In rare cases, such as this one, jets of matter and radiation are shot out from the poles of the black hole. In the case of the AT2022cmc event, evidence of the jets was detected by various telescopes including the VLT, which determined this was the most distant example of such an event.