* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Monday, August 25, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    ‘When Calls the Heart’ Fans All Want the Same Thing After Seeing the Show’s Latest Update – yahoo.com

    When Calls the Heart’ Fans Rally Together in Excitement Over Exciting New Update!

    Quotes of the Week: Peacemaker, Project Runway, Countdown and More – yahoo.com

    This Week’s Most Memorable Quotes from Peacemaker, Project Runway, Countdown, and More!

    Drake Appears in Teaser for Bobbi Althoff’s New Podcast ‘Not This Again’ – yahoo.com

    Drake Drops a Surprise Cameo in Bobbi Althoff’s Thrilling New Podcast Teaser ‘Not This Again

    From polka to Poison, Corn Palace adjusts entertainment offerings with the times – Mitchell Republic

    From polka to Poison, Corn Palace adjusts entertainment offerings with the times – Mitchell Republic

    How to watch ‘F1: The Movie’ on Prime Video – About Amazon

    Experience the Thrill: How to Stream ‘F1: The Movie’ on Prime Video

    FOX One is now available on Prime Video: Here’s everything to know – About Amazon

    FOX One is now available on Prime Video: Here’s everything to know – About Amazon

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Ten upcoming sports stadiums where technology takes to the field – Dezeen

    10 Futuristic Sports Stadiums Revolutionizing the Game with Cutting-Edge Technology

    Figure Technology Solutions, Inc. Files Registration Statement for Proposed Initial Public Offering – Business Wire

    Figure Technology Solutions, Inc. Unveils Exciting Plans for Its Upcoming Initial Public Offering

    UNLV Responds to Workforce Need with Microcredential in Nuclear Technology – University of Nevada, Las Vegas | UNLV

    UNLV Unveils Cutting-Edge Microcredential Program to Fuel Growth in Nuclear Technology

    Why Technology Will Never Take Over Completely – Patheos

    Why Technology Will Never Completely Control Our Lives

    Alcorn State awarded grant to boost STEM with VR technology – WJTV

    Alcorn State Secures Grant to Transform STEM Education Through Cutting-Edge VR Technology

    Hyundai: The Only Way To Beat China Is To Embrace Technology – InsideEVs

    Hyundai’s Bold Strategy to Outpace China with Cutting-Edge Technology

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    ‘When Calls the Heart’ Fans All Want the Same Thing After Seeing the Show’s Latest Update – yahoo.com

    When Calls the Heart’ Fans Rally Together in Excitement Over Exciting New Update!

    Quotes of the Week: Peacemaker, Project Runway, Countdown and More – yahoo.com

    This Week’s Most Memorable Quotes from Peacemaker, Project Runway, Countdown, and More!

    Drake Appears in Teaser for Bobbi Althoff’s New Podcast ‘Not This Again’ – yahoo.com

    Drake Drops a Surprise Cameo in Bobbi Althoff’s Thrilling New Podcast Teaser ‘Not This Again

    From polka to Poison, Corn Palace adjusts entertainment offerings with the times – Mitchell Republic

    From polka to Poison, Corn Palace adjusts entertainment offerings with the times – Mitchell Republic

    How to watch ‘F1: The Movie’ on Prime Video – About Amazon

    Experience the Thrill: How to Stream ‘F1: The Movie’ on Prime Video

    FOX One is now available on Prime Video: Here’s everything to know – About Amazon

    FOX One is now available on Prime Video: Here’s everything to know – About Amazon

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    Ten upcoming sports stadiums where technology takes to the field – Dezeen

    10 Futuristic Sports Stadiums Revolutionizing the Game with Cutting-Edge Technology

    Figure Technology Solutions, Inc. Files Registration Statement for Proposed Initial Public Offering – Business Wire

    Figure Technology Solutions, Inc. Unveils Exciting Plans for Its Upcoming Initial Public Offering

    UNLV Responds to Workforce Need with Microcredential in Nuclear Technology – University of Nevada, Las Vegas | UNLV

    UNLV Unveils Cutting-Edge Microcredential Program to Fuel Growth in Nuclear Technology

    Why Technology Will Never Take Over Completely – Patheos

    Why Technology Will Never Completely Control Our Lives

    Alcorn State awarded grant to boost STEM with VR technology – WJTV

    Alcorn State Secures Grant to Transform STEM Education Through Cutting-Edge VR Technology

    Hyundai: The Only Way To Beat China Is To Embrace Technology – InsideEVs

    Hyundai’s Bold Strategy to Outpace China with Cutting-Edge Technology

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

Planetary Scientists Create Map of Ceres’ Cold Traps

May 13, 2024
in Science
Planetary Scientists Create Map of Ceres’ Cold Traps
Share on FacebookShare on Twitter

The dwarf planet Ceres hosts permanently shadowed areas in its polar regions, and these regions are an interesting analog to Mercury and the Moon. Ceres’ permanently shadowed regions were mapped by NASA’s Dawn spacecraft, and, thanks to scattered sunlight, bright deposits were discovered in a fraction of the permanently shadowed regions. To arrive at a clearer understanding of the nature of cold-trapped ice deposits on Ceres, researchers from the Planetary Science Institute and NASA’s Goddard Space Flight Center constructed improved shape models of permanently shadowed region-hosting craters.

Permanently shadowed regions in the north polar region of Ceres; the color indicates the maximum obliquity at which a location is in shadow through an entire orbit. Image credit: Schorghofer et al., doi: 10.3847/PSJ/ad3639.

Permanently shadowed regions in the north polar region of Ceres; the color indicates the maximum obliquity at which a location is in shadow through an entire orbit. Image credit: Schorghofer et al., doi: 10.3847/PSJ/ad3639.

“For Ceres, the story started in 2016, when the Dawn spacecraft, which orbited around Ceres at the time, glimpsed into these permanently dark craters and saw bright ice deposits in some of them,” said lead author Dr. Norbert Schorghofer, a researcher at the Planetary Science Institute.

“The discovery back in 2016 posed a riddle: many craters in the polar regions of Ceres remain shadowed all year — which on Ceres lasts 4.6 Earth years — and therefore remain frigidly cold, but only a few of them harbor ice deposits.”

“Soon, another discovery provided a clue why: the rotation axis of Ceres oscillates back and forth every 24,000 years due to tides from the Sun and Jupiter.”

“When the axis tilt is high and the seasons strong, only a few craters remain shadowed all year, and these are the craters that contain bright ice deposits.”

To determine how large shadows were inside of craters thousands of years ago, scientists construct digital elevation maps and then perform ray-tracing calculations with them to theoretically reconstruct the shadows cast on the crater floors.

The results are only as reliable as the digital shape models on which they are based. Keep in mind that the floors of these craters are always in shadow, so it is not easy to measure how deep they are.

NASA’s Dawn spacecraft had a very sensitive camera, which could discern features on the shadowed crater floors.

Stereo images of sunlit regions are often used to construct digital elevation maps of sunlit regions, but making an elevation map of shadowed terrain is a challenge that had rarely been taken on.

As part of their study, the authors developed a new technique to reconstruct heights even in the shadowed portions of a stereo pair of images.

These improved elevation maps can then be used for ray-tracing to predict the extent of cold, permanently shadowed regions.

These more accurate maps yielded a surprising result: when Ceres reaches its maximum axis tilt, which last occurred about 14,000 years ago, no crater on Ceres remains perennially shadowed and any ice in them must have quickly sublimated into space.

“That leaves only one plausible explanation: the ice deposits must have formed more recently than that,” Dr. Schorghofer said.

“The results suggest all of these ice deposits must have accumulated within the last 6,000 years or less.”

“Considering that Ceres is well over 4 billion years old, that is a remarkably young age.”

“Ceres is an ice-rich object, but almost none of this ice is exposed on the surface. The aforementioned polar craters and a few small patches outside the polar regions are the only ice exposures. However, ice is ubiquitous at shallow depths, so even a small dry impactor could vaporize some of that ice.”

“A fragment of an asteroid may have collided with Ceres about 6,000 years ago, which created a temporary water atmosphere.”

“Once a water atmosphere is generated, ice would condense in the cold polar craters, forming the bright deposits that we still see today.”

“Alternatively, the ice deposits could have formed by avalanches of ice-rich material. This ice would then survive in only the cold shadowed craters.”

“Either way, these events were very recent on an astronomical time scale.”

The researchers also looked into the possibility that other types of ices, other than water ice, might be trapped in these unusual craters on Ceres.

On our Moon, portions of polar craters are so cold that even carbon dioxide ice and a few other chemical species could last in them for billions of years.

Ceres is farther from the Sun, so its polar craters could be expected to be even colder than the Moon’s.

The scientists calculated temperatures inside Ceres’ polar craters, something that had never been done before.

The answer was surprising: although these craters are cold enough to retain water ice, they are too warm to retain other common types of ice. Two circumstances contribute to this.

First, the axis tilt of Ceres, currently 4 degrees, is higher than the Moon’s 1.5 degree tilt, so more of the crater rims are sunlit and more light is scattered onto the crater floor.

Second, Ceres simply has no perennially shadowed craters very near the north pole, unlike the Moon, where one crater sits almost exactly on the south pole.

For these reasons, temperatures are not as low on Ceres than they are on parts of the lunar surface.

“Whatever the history of the ice deposits, it resulted from events not much older than human civilization,” Dr. Schorghofer said.

The findings appear in the Planetary Science Journal.

_____

Norbert Schorghofer et al. 2024. History of Ceres’s Cold Traps Based on Refined Shape Models. Planet. Sci. J 5 (99); doi: 10.3847/PSJ/ad3639

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : Sci-News.com – https://www.sci.news/space/ceres-cold-traps-12927.html

Tags: planetaryscienceScientists
Previous Post

Very Large Telescope Spots Pink Nebula: Gum 46

Next Post

South America’s Giant Hummingbird is Actually Two Species

Pressured researchers in ecology and conservation demand support to guarantee fair interactions with stakeholders – ScienceDirect.com

Pressured researchers in ecology and conservation demand support to guarantee fair interactions with stakeholders – ScienceDirect.com

August 25, 2025
What moving averages say about Genenta Science S.p.A. Depositary Receipt – Stop Loss & Technical Pattern Based Signals – Newser

What Moving Averages Reveal About Genenta Science S.p.A.: Key Stop Loss Strategies and Technical Patterns Uncovered

August 25, 2025
Asking Eric: My partner’s unhealthy lifestyle is killing our relationship – MassLive

How My Partner’s Unhealthy Habits Are Driving a Wedge Between Us

August 25, 2025
Ten upcoming sports stadiums where technology takes to the field – Dezeen

10 Futuristic Sports Stadiums Revolutionizing the Game with Cutting-Edge Technology

August 25, 2025
WEATHER REPORT: Notre Dame Fighting Irish VS Miami Hurricanes – Yahoo Sports

Epic Showdown Ahead: Notre Dame Fighting Irish Clash with Miami Hurricanes

August 25, 2025
Dengue – World Health Organization (WHO)

Dengue – World Health Organization (WHO)

August 25, 2025
5 Years On, China’s Property Crisis Has No End in Sight – The New York Times

Five Years Later, China’s Property Crisis Shows No Signs of Easing

August 25, 2025
‘When Calls the Heart’ Fans All Want the Same Thing After Seeing the Show’s Latest Update – yahoo.com

When Calls the Heart’ Fans Rally Together in Excitement Over Exciting New Update!

August 25, 2025
State regulators approve sharp health insurance rate increases – Insurance Business America

State Regulators Greenlight Steep Health Insurance Rate Hikes

August 25, 2025
Pols & Politics: Audit finds Mass. government fraudulent spending nearly doubled in Q4 – Boston Herald

Pols & Politics: Audit finds Mass. government fraudulent spending nearly doubled in Q4 – Boston Herald

August 25, 2025

Categories

Archives

August 2025
MTWTFSS
 123
45678910
11121314151617
18192021222324
25262728293031
« Jul    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (789)
  • Economy (809)
  • Entertainment (21,688)
  • General (16,662)
  • Health (9,849)
  • Lifestyle (822)
  • News (22,149)
  • People (810)
  • Politics (818)
  • Science (16,020)
  • Sports (21,308)
  • Technology (15,790)
  • World (790)

Recent News

Pressured researchers in ecology and conservation demand support to guarantee fair interactions with stakeholders – ScienceDirect.com

Pressured researchers in ecology and conservation demand support to guarantee fair interactions with stakeholders – ScienceDirect.com

August 25, 2025
What moving averages say about Genenta Science S.p.A. Depositary Receipt – Stop Loss & Technical Pattern Based Signals – Newser

What Moving Averages Reveal About Genenta Science S.p.A.: Key Stop Loss Strategies and Technical Patterns Uncovered

August 25, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version