@AkaSci@fosstodon.org
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AkaSci

@AkaSci@fosstodon.org

SatCom Scientist
Writing occasionally about space missions, astronomy, planetary science, satellites and science in general.
He/Him
#science #space #technology #astronomy #satellites #Democracy

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AkaSci, to random
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Fresh volcanic eruptions north of Grindavîk, Iceland.

  • Started at 1 pm local (UTC)
  • Fissure location is similar to Dec 19 and Mar 16 eruptions
  • Strong M4.1 earthquake in the area around 11 am
  • Magma likely in contact with groundwater causing explosions and dark plumes of smoke
  • Grindavík, the Blue Lagoon and the power plant in Svartsengi evacuated
  • This eruption is the most powerful in the current system so far.

News: https://www.ruv.is/english/2024-05-29-eruption-on-reykjanes-peninsula-413853
https://www.facebook.com/Almannavarnir
#Iceland
1/n

AkaSci,
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See https://fosstodon.org/@AkaSci/112109292657040065 for coverage and more info on the March 16 eruption near Grindavîk, Iceland.

#Iceland
2/n

AkaSci, (edited ) to random
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29 May 1953 - Edmund Hillary, an explore and mountaineer from New Zealand, and Tenzing Norgay, the Nepalese Sherpa mountaineer, became the first people to stand on the summit of Mt. Everest, the world’s highest peak.

The pic of Tenzing below was taken by Edmund Hillary using the Kodak Retina 118 camera. The camera is displayed at the Otago Museum in Dunedin, New Zealand.
https://www.smithsonianmag.com/smithsonian-institution/sixty-years-ago-edmund-hillary-reached-the-top-of-the-world-hear-him-describe-it-76861267/
https://retrofilmcamera.com/kodak-retina/

1/n

AkaSci,
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Interestingly, Edmund Hillary and Tenzing Norgay reached the summit of Mt. Everest on Tenzing Norgay's birthday.

Tenzing Norgay was born on May 29, 1914 in Tengboche, Khumbu, in northeastern Nepal.

From https://en.wikipedia.org/wiki/Tenzing_Norgay - "Although his exact date of birth is unknown, he knew it was in late May by the weather and the crops. After his ascent of Everest on 29 May 1953, he decided to celebrate his birthday on that day thereafter."

AkaSci, to random
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Happy Birthday to Frank Drake (May 28, 1930 – Sept 2, 2022), astrophysicist, astrobiologist and creator of the Drake equation, which is used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way Galaxy.

The equation was formulated in 1961 as a way to stimulate discussion at the 1st scientific meeting on the search for extraterrestrial intelligence (SETI) at the National Radio Astronomy Observatory site at Green Bank, WV.

https://en.wikipedia.org/wiki/Frank_Drake
1/n

AkaSci, (edited )
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Frank Drake wrote -
At the conference, we plugged in our best estimates for each of the factors, and found that the product of the first six factors on the right hand side came out to roughly the value of 1. Thus the value of N seemed to hinge solely on the value of L — how long intelligent, communicative civilizations could survive. At the end of the meeting, Struve offered a toast: “To the value of L. May it prove to be a very large number.”

🥂
https://astrosociety.org/file_download/inline/58ee6041-5f61-4f88-8b15-d2d3d22ab83d
#Drake
2/n

AkaSci, (edited )
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Frank Drake on the Drake Equation:
"It amazes me to this day to see it displayed prominently in most textbooks on astronomy, often in a big important-looking box.
...
I’m always surprised to see it viewed as one of the great icons of science, because it didn’t take any deep intellectual effort or insight on my part. But then, as now, it expressed a big idea in a form that a scientist, even a beginner, could assimilate."

https://astrosociety.org/file_download/inline/58ee6041-5f61-4f88-8b15-d2d3d22ab83d
https://www.seti.org/father-seti

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AkaSci, (edited )
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The “Vault Plate” for the NASA Europa Clipper spacecraft carries a number of inspirational messages from Earth for posterity, including the Drake Equation! In Drake's own handwriting.

The Europa Clipper will be launched in Oct 2024.

https://www.nasa.gov/missions/europa-clipper/nasa-unveils-design-for-message-heading-to-jupiters-moon-europa/

4/n

AkaSci, to random
@AkaSci@fosstodon.org avatar

The price is rising for buying the government and destroying Democracy under republican rule.

"
When Donald Trump met some of the country’s top donors at a luxurious New York hotel earlier this month, he told the group that a businessman had recently offered $1 million to his presidential effort and wanted to have lunch.

“I’m not having lunch,” Trump said he responded, according to donors who attended. “You’ve got to make it $25 million.”
"

https://www.washingtonpost.com/politics/2024/05/28/trump-wealthy-donors-fundraising/

stim3on, to random
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Look at those boulders!
Photographed yesterday by the Perseverance Mars rover while driving in the ancient riverbed of Neretva Vallis.

I assembled this panorama from 14 Mastcam-Z images captured on Sol 1162, the colors were processed to approximately match what the human eye would see on Mars.

Full resolution: https://flic.kr/p/2pTPFiU

Credit: NASA/JPL-Caltech/ASU/Simeon Schmauß

AkaSci, (edited )
@AkaSci@fosstodon.org avatar

@tsturm @stim3on @TMEubanks
There are a few other rocks and rock fragments in that Martian rockscape that are light colored.

Raman spectroscopy data would be more interesting than color.

Geologists can provide us with better insights. @EricFielding

https://mars.nasa.gov/mars2020/multimedia/raw-images/

AkaSci, (edited ) to random
@AkaSci@fosstodon.org avatar

Craig Caplan of CSPAN reports -

"Republican presidential candidate Donald J. Trump only received .65% (6 votes) as a write in candidate in the first round of voting to be the 2024 Libertarian Party presidential candidate."

6 votes! And a lot of Boos.
Let's plan to make it happen again in November.

Also, "Robert F. Kennedy Jr. was eliminated as the 2024 Libertarian Party presidential candidate in the first round of voting with 2.07% (19 votes) at their national convention in DC."

AkaSci, (edited ) to random
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Searing heat in India today.
Max. recorded temp: 49.8°C
Many central regions of the country with above 40°C temperatures.
May tends to be the hottest month in India.
Source: India Meteorological Department
#India #WxIndia
1/n

AkaSci, (edited )
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Also, severe cyclonic storm Remal is poised to strike Bangladesh around midnight today with max wind speeds of 110-120 kmph. Indian states bordering Bangladesh will also be affected.

Cyclone Remal was named by Oman as per the standard convention of naming tropical cyclones in the region. In Arabic, Remal means sand.

Graphic source: India Meteorological Department

2/n

AkaSci,
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"Heat has become more intense in the past decade and is usually accompanied by severe water shortages, with tens of millions of India's 1.4 billion people lacking running water.

Climate experts say extreme heat in South Asia during the pre-monsoon season is becoming more frequent and the study found that extreme temperatures are now about 0.85 C hotter in the region because of climate change."

https://www.euronews.com/green/2024/05/20/are-indias-heatwaves-getting-worse-with-climate-change-delhi-district-records-478c-heat
https://en.wikipedia.org/wiki/Climate_change_in_India

3/n

AkaSci,
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The monsoon rains normally bring relief to the India subcontinent. Even though the monsoons are forecast for a timely arrival and expected to bring above normal rainfall this year, it will take a few more weeks for it to reach the central parts of India.

See the map below from the IMD for current progress (blue lines) and normal dates (red lines) of monsoon arrival across India.

https://indianexpress.com/article/cities/mumbai/monsoon-onset-schedule-imd-rainfall-9348942/
https://mausam.imd.gov.in/responsive/monsooninformation.php

4/n

AkaSci,
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10-day forecast for New Delhi, India.

Will "cool down" to 42°C by Saturday, then rise again.
🔥 🥵

https://weather.com/en-IN/weather/tenday/l/b2e1f87fe0f7a92ba70229d148ad9288ee1e5b3621294eb40d7a0041353769d0

5/n

AkaSci, (edited )
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More heat records being broken in India.
High temperature today in Mungeshpur near Delhi = 51.4°C.

Press Trust of India is reporting a temperature of 52.3°C in Mungeshpur.

45+ degrees Celsius across much of central and northern India yesterday.
🔥 🥵
Source: India Meteorological Department
#India #Weather #HeatWave #IMD #ClimateDiary
4/n

AkaSci,
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According to the India Meteorological Department, some relief from the brutal heatwave may be at hand starting tomorrow.


5/n

AkaSci, (edited )
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Temperatures in India, like the rest of the world, have been rising due to Climate Change.

India is ranked 4th among the list of countries most affected by climate change in 2015.

This is the 3rd straight year of severe heatwaves in India and the 6th in the last 10 years (see table below).

Temp. rises are also causing Himalayan glaciers to retreat, threatening the flow rate of major rivers.

https://en.wikipedia.org/wiki/Climate_change_in_India
https://en.wikipedia.org/wiki/List_of_Indian_heat_waves

6/n

AkaSci, (edited ) to random
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The largest camera ever built for astrophysics arrived this week at the Rubin Observatory at Cerro Pachón in Chile.

The LSST camera, built by the SLAC National Accelerator Laboratory in Menlo Park, CA, is the final major component of the Rubin Observatory's Simonyi Survey Telescope to arrive at the summit.

Development of the observatory has been funded by the NSF and the DOE.

First light is expected in Dec 2024.

https://www.youtube.com/shorts/jB1s_YEcJi8
https://rubinobservatory.org/news/camera-arrives-chile
1/n

AkaSci, (edited )
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@tobychev
Sorry for the sloppiness - first light is expected in Dec 2024, not Dec 2023.
Thanks!

AkaSci,
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The LSST camera uses 6 different filters, labeled u, g, r, i, z, and y, allowing imaging in near-UV to near-infrared (0.3-1 μm) wavelengths.

The 75-cm diameter filters are mounted on a carousel that allows one of 5 filters to be placed in front of the camera and changed in ~2 minutes. The 6th filter is housed in a special storage stand, separate from the camera, and a device called the filter loader is used to exchange that filter.

https://rubinobservatory.org/explore/technology/camera
https://www6.slac.stanford.edu/news/2015-08-31-worlds-most-powerful-digital-camera-sees-construction-green-light
6/n

AkaSci,
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The goal of the Rubin Observatory is to conduct the 10-year Legacy Survey of Space and Time (LSST). Its objectives include -
• Probing dark energy and dark matter
• Taking an inventory of the solar system
• Exploring the transient optical sky
• Mapping the Milky Way

The LSST will image the entire visible sky every 3-4 nights, allowing it to detect objects that change in brightness or position and to discover billions of new stars and galaxies.

https://www.lsst.org/about
7/n

AkaSci, (edited ) to random
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Here we go again. Another round of severe weather, tornadoes and misery coming up this evening for the plains.

A Particularly Dangerous Situation (PDS, the highest severity level) tornado watch has been issued for southern Kansas, central Oklahoma and far north Texas until 11 p.m. CDT, including Oklahoma City, and Wichita, Kansas. Extremely large hail, strong tornadoes and and destructive wind gusts are possible in this area.

Please take care if you are in the region.

1/n

AkaSci, (edited )
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Monster tornado touchdown in Eddyville, Kentucky (about 30 minutes east of Paducah).

Another one spotted near Goreville, IL about 30 miles southeast of Carbondale, IL and one more energetic tornado north of Dawson Springs, KY.

Line of severe thunderstorms now moving into KY and TN.

Tornado Warnings issued for Greenville KY, Powderly KY and Beechmont KY until 10:00 PM CDT, Beechmont KY, Drakesboro KY and Belton KY until 10:15 PM CDT.

Please take care.
https://www.spc.noaa.gov/products/md/md1002.html
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AkaSci, (edited ) to random
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It's alive :mastodance:

The JAXA SLIM lander, lying in its awkward stance on the lunar surface, responded last night to a command sent by JAXA. Against all hope, it appears that it survived the cold lunar night.

The batteries were expected to get charged around this time, shortly after lunar midday, since the solar panels are facing southwest instead of up.

Apparently, the temperature of the comm equipment was too high, so comms was quickly terminated. Stay tuned!

1/n

AkaSci,
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The JAXA SLIM lunar lander was expected to wake up again around May 24, hopefully having survived a 4th brutal lunar night. After all, against all odds, it had survived the first 3 nights.

But it has not responded in two attempts made so far. Perhaps, its electronics finally succumbed to the lunar elements? The #SLIM team will try again tomorrow.

Note that the solar panels get sunlight well after lunar noon due to their unfortunate orientation with the lander in the upside down position.
🤞
6/n

AkaSci, (edited )
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No luck communicating with the JAXA SLIM lunar lander this time around, as the Sun sets at the landing site.

They turned the power off overnight and are hoping that "the whole system will be reset and restarted" when it tries to wake up 24 days from now.

Note that the primary mission ended in January. SLIM has lasted this long even though it was not designed to survive lunar nights.

#JAXA #SLIM
7/n

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