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San Diego County News

Independent publication serving San Diego County

Hubble pins down weird exoplanet with a far-flung orbit

December 12, 2020 By sdcnews

(Newswise)–A planet in an unlikely orbit around a double star 336 light-years away may offer a clue to a mystery much closer to home: a hypothesized, distant body in the solar system dubbed “Planet Nine.”  This is the first time that astronomers have been able to measure the motion of a massive Jupiter-like planet that […]

Filed Under: Science & Technology, Space Tagged With: Science & Technology

Warm oceans helped first human migration from Asia to North America

December 12, 2020 By sdcnews

(Newswise)–New research reveals significant changes to the circulation of the North Pacific and its impact on the initial migration of humans from Asia to North America. The new international study led by the School of Earth and Environmental Sciences at the University of St Andrews and published Dec. 9 in Science Advances provides a new picture of […]

Filed Under: Science & Technology Tagged With: Ocean, Science & Technology

Researchers reveal switch used in plant defense against animal attack

November 29, 2020 By sdcnews

(Newswise)–For decades, scientists have known that plants protect themselves from the devastation of hungry caterpillars and other plant-munching animals through sophisticated response systems, the product of millions of years of evolution. The biological mechanisms underlying this attack-counter defense paradigm have been vigorously pursued by plant biologists given that such details will help unlock a trove […]

Filed Under: Science, Science & Technology Tagged With: Science, Science and technology

Buzz kill: Ogre-faced spiders ‘hear’ airborne prey with their legs

November 4, 2020 By sdcnews

(Newswise)–In the dark of night, ogre-faced spiders with dominating big eyes dangle from a silk frame to cast a web and capture their ground prey. But these spiders also can capture insects flying behind them with precision, and Cornell University scientists have now confirmed how. In a new study, researchers confirmed these spiders use metatarsal […]

Filed Under: Science, Science & Technology

NASA’s OSIRIS-REx Spacecraft successfully touches asteroid

October 21, 2020 By sdcnews

NASA’s Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx) spacecraft unfurled its robotic arm Tuesday, and in a first for the agency, briefly touched an asteroid to collect dust and pebbles from the surface for delivery to Earth in 2023. This well-preserved, ancient asteroid, known as Bennu, is currently more than 200 million miles […]

Filed Under: Science & Technology, Space Tagged With: Science & Technology, Space

Studying the sun as a star to understand stellar flares and exoplanets

October 19, 2020 By sdcnews

(Newswise)–New research shows that sunspots and other active regions can change the overall solar emissions. The sunspots cause some emissions to dim and others to brighten; the timing of the changes also varies between different types of emissions. This knowledge will help astronomers characterize the conditions of stars, which has important implications for finding exoplanets […]

Filed Under: Science & Technology, Space Tagged With: Science and technology, Space

Global survey using NASA data shows dramatic growth of glacial lakes

August 31, 2020 By sdcnews

In the largest-ever study of glacial lakes, researchers using 30 years of NASA satellite data have found that the volume of these lakes worldwide has increased by about 50% since 1990 as glaciers melt and retreat due to climate change. The findings, published in the journal Nature Climate Change, will aid researchers assessing the potential […]

Filed Under: Science & Technology Tagged With: Science & Technology

Hubble uses Earth as a proxy for identifying oxygen on potentially habitable planets around other stars

August 8, 2020 By sdcnews

(Newswise)–Taking advantage of a total lunar eclipse, astronomers using NASA’s Hubble Space Telescope have detected Earth’s own brand of sunscreen – ozone – in our atmosphere. This method simulates how astronomers and astrobiology researchers will search for evidence of life beyond Earth by observing potential “biosignatures” on exoplanets (planets around other stars). Hubble did not look at […]

Filed Under: Science & Technology, Space Tagged With: Science & Technology, Space

A new idea on how Earth’s outer shell first broke into tectonic plates

July 27, 2020 By sdcnews

(Newswise)–The activity of the solid Earth – for example, volcanoes in Java, earthquakes in Japan, etc.- is well understood within the context of the ~50-year-old theory of plate tectonics. This theory posits that Earth’s outer shell (Earth’s “lithosphere”) is subdivided into plates that move relative to each other, concentrating most activity along the boundaries between […]

Filed Under: Science, Science & Technology Tagged With: Science & Technology

NASA announces new James Webb Space Telescope target launch date

July 17, 2020 By sdcnews

NASA is now targeting Oct. 31, 2021, for the launch of the agency’s James Webb Space Telescope from French Guiana, due to impacts from the ongoing coronavirus (COVID-19) pandemic, as well as technical challenges. This decision is based on a recently completed scheduled risk assessment of the remaining integration and test activities prior to launch. […]

Filed Under: Science & Technology, Space Tagged With: Science & Technology, Space

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