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Nov. 27, 2001 / 5:41 PM

Coffee limits blood flow to brain

CHICAGO, Nov. 27 (UPI) -- Drinking coffee or other caffeinated beverages impedes blood flow to the brain enough to affect research based on scans of brain activity, a new study said Tuesday. Radiologists at the University of Wisconsin-Madison said caffeine reduces blood flow by nearly one-fourth in the gray matter of the brain where nerve cells concentrate.

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NASA chooses 4 crew members for next Mars mission simulation

Science News // 8 hours ago

NASA chooses 4 crew members for next Mars mission simulation

April 15 (UPI) -- NASA on Monday revealed its choices for the next four-person crew to participate in a simulated mission to Mars performed within a habitat at the agency's Johnson Space Center in Houston.

NOAA says fourth global coral bleaching event underway

Science News // 9 hours ago

NOAA says fourth global coral bleaching event underway

April 15 (UPI) -- The world's oceans are now undergoing the fourth global coral bleaching event on record and the second in the last 10 years, the National Oceanic and Atmospheric Administration announced Monday.

'Brightest of All Time' gamma-ray burst caused by exploding star, say scientists

Science News // 3 days ago

'Brightest of All Time' gamma-ray burst caused by exploding star, say scientists

April 12 (UPI) -- Northwestern University scientists said Friday they had confirmed that the cause of the brightest gamma-ray burst ever observed in October 2022 was an exploding star, known as a supernova, 2.4 billion light years away.

NASA's planet-hunter TESS temporarily shuts off

Science News // 4 days ago

NASA's planet-hunter TESS temporarily shuts off

April 11 (UPI) -- NASA's eye in the sky has unexpectedly shut off, temporarily interrupting its survey of space.

SpaceX launches military weather satellite into orbit

Science News // 4 days ago

SpaceX launches military weather satellite into orbit

April 11 (UPI) -- SpaceX launched its second national security mission of 2024 on Thursday with a Falcon 9 rocket lifting the U.S. Space Force missionUSSF-62 into orbit.

From Florida, ULA Delta IV Heavy lifts off for final time

Science News // 6 days ago

From Florida, ULA Delta IV Heavy lifts off for final time

April 9 (UPI) -- The United Launch Alliance is expected to oversee the final deployment of the Delta IV Heavy as it lifts a National Reconnaissance Office satellite into space on a national security mission.

Total solar eclipse completes trek across Mexico, United States, eastern Canada

Science News // 1 week ago

Total solar eclipse completes trek across Mexico, United States, eastern Canada

April 8 (UPI) -- A rare total solar eclipse, the first in seven years and the last in two decades over the continental United States, completed its trek Monday across parts of Mexico, 15 states and eastern Canada.

Trillions of cicadas to swarm U.S.; first double-brood emergence in 200 years

Science News // 1 week ago

Trillions of cicadas to swarm U.S.; first double-brood emergence in 200 years

April 6 (UPI) -- A rare double-emergence of cicada broods is about to swarm the eastern United States in the coming weeks, scientists say.

Multinational team safely returns to Earth from the International Space Station

Science News // 1 week ago

Multinational team safely returns to Earth from the International Space Station

April 6 (UPI) -- NASA astronaut Loral O'Hara, Belarus's Marina Vasilevskay and Russian cosmonaut Oleg Novitsky successfully returned to Earth Saturday after spending time on the International Space Station.

NASA to send unmanned drone 2 miles high to study radiation during eclipse

Science News // 1 week ago

NASA to send unmanned drone 2 miles high to study radiation during eclipse

April 5 (UPI) -- NASA researchers are planning to study changes in the Sun's radiation during the solar eclipse via an unmanned aircraft on Monday.

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