Anonymous ID: dc1a25 Nov. 30, 2024, 6:44 a.m. No.22081550   🗄️.is 🔗kun   >>1748 >>1779 >>1875

NASA Astronomy Picture of the Day

November 30, 2024

 

Winter and Summer on a Little Planet

 

Winter and summer appear to come on a single night to this stunning little planet. It's planet Earth of course. The digitally mapped, nadir centered panorama covers 360x180 degrees and is composed of frames recorded during January and July from the Col du Galibier in the French Alps. Stars and nebulae of the northern winter (bottom) and summer Milky Way form the complete arcs traversing the rugged, curved horizon. Cars driving along on the road during a summer night illuminate the 2,642 meter high mountain pass, but snow makes access difficult during winter months except by serious ski touring. Cycling fans will recognize the Col du Galibier as one of the most famous climbs in planet Earth's Tour de France.

 

https://apod.nasa.gov/apod/astropix.html

Anonymous ID: dc1a25 Nov. 30, 2024, 6:55 a.m. No.22081589   🗄️.is 🔗kun   >>1748 >>1779 >>1875

Large Bushfire Blazing North of Perth, Australia

Nov 29, 2024

 

This false-color (bands M11-I2-I1) corrected reflectance image of a large bushfire north of Perth, Australia, was captured by the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard the joint NASA/NOAA NOAA-21 platform.

Press the blue "Play" button in the lower left corner of the image to view an animation of the spread of the bushfire from November 23 to November 28.

Click the icon in the upper right corner to interactively explore this fire in NASA Worldview.

 

The fire began about 200km north of Perth as a result of a car crash on Monday, November 25.

It has burned through 68,250 acres of land, and approximately 200 firefighters are currently battling the fire.

The fire is moving in a westerly direction and is threatening the coastal communities of Cervantes, Wedge, and Grey.

 

Visit Worldview to visualize near real-time imagery from NASA's Earth Science Data and Information System (ESDIS); find more imagery in our Worldview weekly image archive.

 

https://www.earthdata.nasa.gov/news/worldview-image-archive/large-bushfire-blazing-north-perth-australia

https://worldview.earthdata.nasa.gov/

Anonymous ID: dc1a25 Nov. 30, 2024, 7:03 a.m. No.22081628   🗄️.is 🔗kun   >>1748 >>1779 >>1875

NASA Images Reveal Stark Changes in Alaska's Lakes

Nov 28, 2024 at 11:05 AM EST

 

In the southeastern reaches of Alaska, landscapes are being dramatically reshaped as ice gives way to water.

Recent images released by the NASA Earth Observatory reveal striking changes to the region's proglacial lakes, formed as glaciers retreat and meltwater pools at their fronts.

Over the past four decades, three lakes—Harlequin, Alsek and Grand Plateau—have grown at an astonishing pace, transforming the region into a burgeoning "lake district."

 

The trio of glaciers feeding these lakes—Yakutat, Alsek and Grand Plateau—descend from Alaska's inland mountains to the coastal plain southeast of Yakutat borough.

In the southeastern reaches of Alaska, landscapes are being dramatically reshaped as ice gives way to water.

Recent images released by the NASA Earth Observatory reveal striking changes to the region's proglacial lakes, formed as glaciers retreat and meltwater pools at their fronts.

 

Over the past four decades, three lakes—Harlequin, Alsek and Grand Plateau—have grown at an astonishing pace, transforming the region into a burgeoning "lake district."

The trio of glaciers feeding these lakes—Yakutat, Alsek and Grand Plateau—descend from Alaska's inland mountains to the coastal plain southeast of Yakutat borough.

Grand Plateau Glacier's northern arm saw the most significant change, retreating 4.8 miles.

 

These changes were captured in a pair of satellite images from the Landsat 5 and Landsat 8 satellites in the summers of 1984 and 2024, revealing how water now fills the void left by ice.

Together, the three lakes almost doubled in size over the 40-year period.

In 1984, the lakes spanned about 50 square miles. By 2024, they covered 90 square miles—an area larger than New York's Seneca Lake, one of the Finger Lakes also carved by ancient glaciers.

 

"The lakes that are forming in this region are immense, starting at the mountains and spreading toward the coast, making this a new lake district that is unique in our nation," Pelto said in a statement.

Pelto suggested this lake system could represent the fastest-growing collection of lakes in the U.S. in this century, reflecting the accelerated retreat of Alaska's glaciers due to climate change.

The lakes are not only expanding but also undergoing noticeable transformations.

 

Alsek Lake, for instance, appears much bluer in the 2024 image compared to 1984.

This shift suggests that the lake is receiving less "glacial flour"—fine-grained sediment carried by meltwater streams, according to a NASA Earth Observatory article.

 

As sediment levels drop, the lake's water will continue to darken, allowing more light to penetrate and potentially fostering aquatic life and fishery development.

The pattern is one that is repeating across Alaska and the Arctic more broadly.

According to the National Park Service, glaciers within Alaska national parks shrank by 8 percent between the 1950s and the early 2000s.

This pace ticked upward, with 13 percent lost from 1985 to 2020.

 

https://www.newsweek.com/nasa-images-reveal-stark-changes-alaska-lakes-1993119

Anonymous ID: dc1a25 Nov. 30, 2024, 7:09 a.m. No.22081640   🗄️.is 🔗kun   >>1748 >>1757 >>1768 >>1779 >>1875

Flood in server room halts NASA solar observatory operations

November 29, 2024

 

The SDO observatory was launched by NASA in 2010. It is located in geostationary orbit at an altitude of 36,000 kilometers above the Earth and studies the Sun and its activity.

SDO is capable of observing in 12 wavebands ranging from extreme ultraviolet to visible light.

 

In 14 years of operation, SDO has experienced almost no serious problems. Ironically, the mission’s first notable failure occurred not in space, but on Earth.

The fact is that all data collected by SDO was stored and processed on a server at Stanford University’s Joint Center for Science Operations. On November 26, it stopped working.

The reason was flooding of the server room.

 

It’s not yet known how long the server has been repaired — but judging by the official announcement, we’re talking about quite a long time.

All the while, scientists will be left without SDO data, which certainly can’t be called good news.

 

The fact is that the Sun is now at the peak of its activity and regularly produces powerful flares and coronal masses.

And SDO observational data play a very important role in assessing this activity and better understanding what processes lead to its cyclic amplifications and attenuations.

But for now, scientists will have to do without the machine’s data for a while.

 

https://universemagazine.com/en/flood-in-server-room-halts-nasa-solar-observatory-operations/

https://solarweb1.stanford.edu/

Anonymous ID: dc1a25 Nov. 30, 2024, 7:26 a.m. No.22081695   🗄️.is 🔗kun   >>1779 >>1875

Culmination of Initial Phase of Training for Gaganyatris for Joint ISRO-NASA Mission to International Space Station

November 28, 2024

 

Towards the goal of accomplishing a joint ISRO-NASA effort to the International Space Station, the two Gaganyatris (Prime-Group Captain Shubhanshu Shukla and Backup-Group Captain Prasanth Balakrishnan Nair) assigned for Axiom Mission 4 (Ax-4) commenced their training in the U.S.A from first week of August,2024.

The initial phase of training has been completed successfully by the Gaganyatris.

 

During this phase of training, the Gaganyatris have completed initial orientations for mission-related ground facility tours, initial overview of mission launch phases, SpaceX suit fit checks, and selected space food options.

 

Furthermore, the training also included familiarization sessions with the SpaceX Dragon spacecraft and various onboard systems of the International Space Station, including photography from space, daily operations routine, and communication protocols.

One of the important highlights of this phase was training for various types of emergencies in space, including medical emergencies.

 

Upcoming training will primarily address the remaining modules of the U.S. Orbital Segment of the space station along with training towards conducting scientific research experiments in microgravity environment during the mission.

In addition, the crew will train and perform different mission scenarios in the SpaceX Dragon spacecraft.

 

https://www.isro.gov.in/Training_Gaganyatris_ISRO-NASA_Mission.html

Anonymous ID: dc1a25 Nov. 30, 2024, 7:39 a.m. No.22081742   🗄️.is 🔗kun   >>1753 >>1779 >>1875

Catholic NASA scientist delves into investigation of potential life on other planets

November 30, 2024

 

The unresolved question of whether life exists on other planets continues to spark curiosity from the public and the interest of scientists — but one Catholic physicist working on missions to search for potential life also recognizes it as an opportunity to see the glory of God.

Jonathan Lunine, a convert to the Catholic faith and the chief scientist for NASA’s Jet Propulsion Laboratory in Pasadena, California, spoke to roughly 100 Catholic scientists about the subject at an event in Washington, D.C., on Friday, Nov. 15.

The lecture followed a Gold Mass, celebrated for Catholic scientists, at the Cathedral of St. Matthew the Apostle. A Gold Mass is held on the feast of St. Albertus Magnus — a Dominican friar, medieval scientist, patron saint of scientists, and mentor to St. Thomas Aquinas.

 

It was sponsored by The Catholic University of America and the local chapter of the Society of Catholic Scientists, which seeks to respond to St. John Paul II’s calling for Catholic scientists to “integrate the worlds of science and religion in their own intellectual and spiritual lives.”

“I’m not a theologian; I’m a scientist,” Lunine told the crowd as they finished eating brunch at the Beacon Hotel, which is a short walk from the cathedral, about a half-mile north of the White House.

Lunine — whose work at NASA has involved the search for the possibility of unintelligent microbial life on Jupiter’s moon Europa and Saturn’s moons Enceladus and Titan — said that as a scientist, “this has been a wonderful journey, being able to participate in these missions.”

 

As a Catholic scientist, he said he sees “the gift of the mind” as a gift that “God has given us to … understand the glory of God’s creation.”

Microbial life on other planets, if it were to be found, he said, would be a “manifestation of the order that is baked into the universal design that God created when he created the universe” and created so that “beauty might shine forth from that very order.”

Lunine said those three moons are the most likely locations to have the conditions to sustain life that we have the ability to reach, particularly due to the prevalence of water.

The mission to Europa should conclude between 2030 and 2035, the mission to Titan should conclude in the 2030s, and the mission to Enceladus should conclude in the 2040s, he said.

 

If microbial life were to be discovered on any of those moons, Lunine told CNA, it would show us that there are “other places beyond the Earth where life began.”

Lunine said more theological questions would be raised if the search for life on other planets develops into a search for intelligent and self-aware life that developed on another planet. This would lead to questions like “Are they saved?” or “Are they fallen?”, he said.

If intelligent life exists on other planets, he said it would be “hard to imagine” that none had fallen from God’s grace, noting that it is easy to fall and “even the angels, some of them have fallen.”

He said this would create questions such as “did Christ come to their world in a separate incarnation” to save them, and how would humanity would “be the central pivot point of cosmic history.”

 

The Catholic Church holds no official position on whether intelligent life exists on other planets, but Pope Francis commented on the subject in 2015, saying:

“Honestly I wouldn’t know how to answer,” adding: “Until America was discovered we thought it didn’t exist, and instead it existed.”

The pontiff, however, did affirmatively say that everything in the universe has been created through divine intelligence and “is not the result of chance or chaos.”

 

https://denvercatholic.org/catholic-nasa-scientist-delves-into-investigation-of-potential-life-on-other-planets/