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January 10, 2020



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January 10, 2020 at 04:01 PM | Permalink | Comments (0)

Venus has active volcanoes


[photo caption: This figure shows the volcanic peak Idunn Mons (at 46 degrees south latitude, 214.5 degrees east longitude) in the Imdr Regio area of Venus. The colored overlay shows the heat patterns derived from surface brightness data collected by the Visible and Infrared Thermal Imaging Spectrometer (VIRTIS), aboard the European Space Agency's Venus Express spacecraft. Image credit: NASA]

From USRA :

New research led by Universities Space Research Association (USRA) and published January 3, 2020 in Science Advances shows that lava flows on Venus may be  only a few years old, suggesting that Venus could be volcanically active today — making it the only planet in our solar system, other than Earth, with recent eruptions.

"If Venus is indeed active today, it would make a great place to visit to better understand the interiors of planets," says Dr. Justin Filiberto, the study's lead author and a USRA staff scientist at the Lunar and Planetary Institute (LPI). "For example, we could study how planets cool and why the Earth and Venus have active volcanism, but Mars does not. Future missions should be able to see these flows and changes in the surface and provide concrete evidence of its activity."

Radar imaging from NASA's Magellan spacecraft in the early 1990s revealed Venus, our neighboring planet, to be a world of volcanoes and extensive lava flows.

In the 2000s, the European Space Agency's (ESAs') Venus Express orbiter shed new light on volcanism on Venus by measuring the amount of infrared light emitted from part of Venus' surface (during its nighttime).

These new data allowed scientists to identify fresh versus altered lava flows on the surface of Venus.

However, until recently, the ages of lava eruptions and volcanoes on Venus were not well known.

Dr. Filiberto and his colleagues recreated Venus' hot caustic atmosphere in the laboratory to investigate how the observed Venusian minerals react and change over time.

Their experimental results showed that an abundant mineral in basalt — olivine — reacts rapidly with the atmosphere and within weeks becomes coated with the iron oxide minerals magnetite and hematite.

They further found that the Venus Express observations of this change in minerology would only take a few years to occur.  

Thus, the new results by Filiberto and coauthors suggest that these lava flows on Venus are very young, which in turn would imply that Venus does indeed have active volcanoes.

January 10, 2020 at 02:01 PM | Permalink | Comments (0)

List of Fictional Institutions

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There goes the day.

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January 10, 2020 at 12:01 PM | Permalink | Comments (0)

"The Expanse" — Season 4

Every bit as compelling as the first three seasons.

I love everything about this series: the cast is superb, visuals fantastic, stories absorbing.

Highest possible recommendation.

January 10, 2020 at 10:01 AM | Permalink | Comments (0)

ButterUp Knife



Since forever I've made a mess of hard butter by scraping the top to produce thin pieces I can spread.

This knife should put paid to that.

From the website:

ButterUp is designed to prevent cold chunks of butter from ripping apart your sandwich.

This nifty knife takes a hard brick of butter and turns it into sumptuous, spreadable ribbons.

Its form was perfected by self-proclaimed "butter enthusiasts" who prototyped a plethora of models before finally settling on a design that features a wide blade with built-in grater for maximum butter-to-bread surface area.

Features and Details:

• Dishwasher-safe

• Stainless steel

• 8"L x 1"W

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$20 (butter included*: choose from Plugrá, Bordier, or Kerrygold)

*Bizarro World purchases only

January 10, 2020 at 08:01 AM | Permalink | Comments (1)

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