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Posted inSci/Tech

Planetary Defense Exercise Uses Apophis as Hazardous Asteroid Stand-In

Over 100 participants from 18 countries – including NASA scientists and the agency’s NEOWISE mission – took part in the international exercise. Watching the skies for large asteroids that could pose a hazard to the Earth is a global endeavor. So, to test their operational readiness, the international planetary defense community will sometimes use a […]

Posted inCalifornia

Woolsey Fire Led to Spike in Bacteria, Cloudiness in Coastal Waters

Scientists analyzed coastal water quality in the months following a major Southern California wildfire. Their results were eye-opening. The November 2018 Woolsey Fire in Southern California’s Los Angeles and Ventura counties left more than a nearly 100,000-acre burn scar behind: It also left the adjacent coastal waters with unusually high levels of fecal bacteria and […]

Posted inSci/Tech

NASA’s MRO Finds Water Flowed on Mars Longer Than Previously Thought

Caltech researchers used the Mars Reconnaissance Orbiter to determine that surface water left salt minerals behind as recently as 2 billion years ago. Mars once rippled with rivers and ponds billions of years ago, providing a potential habitat for microbial life. As the planet’s atmosphere thinned over time, that water evaporated, leaving the frozen desert […]

Posted inSci/Tech

NASA’s Juno Spacecraft ‘Hears’ Jupiter’s Moon

An audio track collected during Jupiter mission’s Ganymede flyby offers a dramatic ride-along. It is one highlights mission scientists shared in a briefing at American Geophysical Union Fall Meeting. Sounds from a Ganymede flyby, magnetic fields, and remarkable comparisons between Jupiter and Earth’s oceans and atmospheres were discussed during a briefing today on NASA’s Juno […]

Posted inSci/Tech

Emission Reductions From Pandemic Had Unexpected Effects on Atmosphere

November 9, 2021 – Earth’s atmosphere reacted in surprising ways to the lowering of emissions during the pandemic, showing how closely climate warming and air pollution are linked. The COVID-19 pandemic and resulting limitations on travel and other economic sectors by countries around the globe drastically decreased air pollution and greenhouse gas emissions within just […]

Posted inSci/Tech

Hear Sounds From Mars Captured by NASA’s Perseverance Rover

Two microphones aboard the six-wheeled spacecraft add a new dimension to the way scientists and engineers explore the Red Planet. Thanks to two microphones aboard NASA’s Perseverance rover, the mission has recorded nearly five hours of Martian wind gusts, rover wheels crunching over gravel, and motors whirring as the spacecraft moves its arm. These sounds […]