NASA Researcher Finds Planet-Sized Space Weather Explosions At Venus | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Most Recent Daily Episodes

Episode Date

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday Airborne-Thursday

Airborne-Friday

Airborne On YouTube

Airborne-Unlimited-10.28.24

Airborne-NextGen-10.29.24

Airborne-Unlimited-10.30.24

Airborne-Unlimited-10.24.24

Airborne-Unlimited-10.25.24

Sun, Feb 23, 2014

NASA Researcher Finds Planet-Sized Space Weather Explosions At Venus

'Hot Flow Anomalies' Can Occur Multiple Times Each Day

Researchers recently discovered that a common space weather phenomenon on the outskirts of Earth’s magnetic bubble, the magnetosphere, has much larger repercussions for Venus. The giant explosions, called hot flow anomalies, can be so large at Venus that they’re bigger than the entire planet and they can happen multiple times a day.

"Not only are they gigantic," said Glyn Collinson, a space scientist at NASA’s Goddard Space Flight Center in Greenbelt, MD. "But as Venus doesn’t have a magnetic field to protect itself, the hot flow anomalies happen right on top of the planet. They could swallow the planet whole."

Collinson is the first author of a paper on these results that appeared online in the Journal of Geophysical Research in February 2014. The work is based on observations from the European Space Agency's Venus Express. The results show just how large and how frequent this kind of space weather is at Venus.
 
Earth is protected from the constant streaming solar wind of radiation by its magnetosphere. Venus, however, has no such luck. A barren, inhospitable planet, with an atmosphere so dense that spacecraft landing there are crushed within hours, Venus has no magnetic protection.
 
Scientists like to compare the two: What happened differently at Earth to make it into the life-supporting planet it is today? What would Earth be like without its magnetic field? At Earth, hot flow anomalies do not make it inside the magnetosphere, but they release so much energy just outside that the solar wind is deflected, and can be forced to move back toward the sun. Without a magnetosphere, what happens at Venus is very different.
 
Venus's only protection from the solar wind is the charged outer layer of its atmosphere called the ionosphere. A sensitive pressure balance exists between the ionosphere and the solar wind, a balance easily disrupted by the giant energy rush of a hot flow anomaly. The hot flow anomalies may create dramatic, planet-scale disruptions, possibly sucking the ionosphere up and away from the surface of the planet.

(Image provided by NASA)

FMI: www.nasa.gov

Advertisement

More News

Senator Pushes FAA to Accelerate Rocket Launch Licensing

States That Current Process is Damaging National Aerospace Development US Senator Jerry Morgan is pushing the FAA to speed up the process for rocket launch licensing. He argues tha>[...]

Classic Aero-TV: RJ Gritter - Part of Aviation’s Bright New Future

From 2015 (YouTube Edition): Model Aviator Aims For Full-Scale Career While at the 2015 Indoor Electric RC Festival, referred to as eFest, ANN CEO and Editor-In-Chief, Jim Campbell>[...]

Aero-FAQ: Dave Juwel's Aviation Marketing Stories -- ITBOA BNITBOB

Dave Juwel's Aviation Marketing Stories ITBOA BNITBOB ... what does that mean? It's not gibberish, it's a lengthy acronym for "In The Business Of Aviation ... But Not In The Busine>[...]

ANN's Daily Aero-Linx (10.27.24)

Aero Linx: Cardinal Flyers Online The Cardinal Flyers Online Web site was created and is maintained by me, Keith Peterson. My wife Debbie and I have owned a 1976 RG since 1985. Wit>[...]

ANN's Daily Aero-Term (10.27.24): Clearance Void If Not Off By (Time)

Clearance Void If Not Off By (Time) Used by ATC to advise an aircraft that the departure release is automatically canceled if takeoff is not made prior to a specified time. The exp>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2024 Web Development & Design by Pauli Systems, LC