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Astronomy Picture of the Day - A Gravity Map of Earth
NASA ^ | 24 Mar, 2026 | Video Credit: NASA, GSFC, GRACE, SVS

Posted on 03/24/2026 12:16:28 PM PDT by MtnClimber

Explanation: Is gravity the same over the surface of the Earth? No -- in some places you will feel slightly heavier than others. The featured Earth map video shows in colors and exaggerated highs and lows where the gravitational field of Earth is relatively strong and weak. A low spot, where you would feel slightly lighter, can be seen just off the coast of India, in blue, while a relative high occurs in the mountains of Chile in South America. The cause of these irregularities does not always follow present surface features. Scientists hypothesize that other important factors lie in deep underground structures in Earth's mantle and may be related to the Earth's appearance in the distant past. The featured map was composed from data taken by NASA's twin GRACE satellites that orbited the Earth from 2002 to 2017. GRACE mapped Earth's gravity by carefully tracking tiny changes in the distance between the two satellites.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa
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To be added or removed from the Astronomy Picture of the Day ping list please send me a request via "Private Reply" (Mail).

Today's image is a short video clip at the source link.

1 posted on 03/24/2026 12:16:28 PM PDT by MtnClimber
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To: 21stCenturion; 21twelve; 4everontheRight; A Navy Vet; A_perfect_lady; abb; AFB-XYZ; AFPhys; ...
Pinging the APOD list

🪐 🌟 🌌 🍔

Today's image is a short video clip at the source link.

2 posted on 03/24/2026 12:17:01 PM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
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To: MtnClimber

The map shows that the gravitational field is distorted when you stand next to Stacey Abrams.


3 posted on 03/24/2026 12:22:26 PM PDT by Tell It Right (1 Thessalonians 5:21 -- Put everything to the test, hold fast to that which is true.)
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To: MtnClimber

Seems like many of the high-gravity areas correspond with volcanic activity


4 posted on 03/24/2026 12:25:24 PM PDT by chrisser (I lost my vaccine card in a tragic boating accident. )
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To: MtnClimber

I’m not overweight, gravity is just stronger in my location.


5 posted on 03/24/2026 12:26:25 PM PDT by for-q-clinton (RL)
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To: Tell It Right

this map totally explains my missed golf puts in Michigan...


6 posted on 03/24/2026 12:27:53 PM PDT by epluribus_2 (!)
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To: Tell It Right
The map shows that the gravitational field is distorted when you stand next to Stacey Abrams.

It's just because she's so dense.

7 posted on 03/24/2026 12:28:12 PM PDT by Still Thinking (Freedom is NOT a loophole!)
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To: MtnClimber

My wife claimed that I shrunk an inch and a half. I told her the gravity is just stronger where we now live.


8 posted on 03/24/2026 12:31:31 PM PDT by montag813
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To: MtnClimber

I noticed that it’s heaviest where there are volcanoes (and obviously mountains).


9 posted on 03/24/2026 12:32:32 PM PDT by Bikkuri (Whomever thought China and India were ever going to be serious allies hasn’t been paying attention..)
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To: MtnClimber

Doesn’t this conflict with Einstein’s view of “space-time” causing gravity?


10 posted on 03/24/2026 12:32:42 PM PDT by montag813
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To: MtnClimber

Looks like I’m OK where I’m at.


11 posted on 03/24/2026 12:34:18 PM PDT by kawhill (Dywedwch Wrthym because + Add translation Welsh-English dictionary 'Tell Us')
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To: epluribus_2

Right,I knew this because guided missiles need to take into consideration the different forces along a flight path. In fact an accurate digital gravity map would be classified.


12 posted on 03/24/2026 12:47:31 PM PDT by KC_for_Freedom (retired aerospace engineer and CSP who also taught)
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To: MtnClimber

Is it possible there are huge heavy metal deposits,like lead, that distort gravity in their locations? ... “Density and Gravity: Why Compact Matter Pulls Stronger Than Mass Alone


13 posted on 03/24/2026 12:47:36 PM PDT by antidemoncrat
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To: MtnClimber

What I was curious about is the magnitude of those differences. For anyone else interested, from Wikipedia:

“Gravity on the Earth’s surface varies by around 0.7%, from 9.7639 m/s2 on the Nevado Huascarán mountain in Peru to 9.8337 m/s2 at the surface of the Arctic Ocean.”


14 posted on 03/24/2026 1:02:27 PM PDT by Stosh
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To: MtnClimber

My man cave is in a high-gravity zone. When I sit down in my recliner, I can’t get back up again without help.


15 posted on 03/24/2026 1:06:42 PM PDT by ComputerGuy
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To: Tell It Right
"The map shows that the gravitational field is distorted when you stand next to Stacey Abrams."


... or this chic.



16 posted on 03/24/2026 1:11:07 PM PDT by plain talk
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To: montag813

Here is how I have known for quite a while that gravity is steadily increasing:

1. I can’t jump as high as I used to.
2. I can’t lift things I used to.
3. When I fall down, I hit harder and it hurts more.
4. (this is the scientifically measurable part) When I step on the scale, it reads higher than it used to.

Proof enough for me!


17 posted on 03/24/2026 1:29:05 PM PDT by HartleyMBaldwin
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To: plain talk

Well women also tend to date men that are larger than them, so she has yet another dilemma. Not too many can meet that requirement in her condition.


18 posted on 03/24/2026 1:34:33 PM PDT by Secret Agent Man (Gone Galt; not averse to Going Bronson.)
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To: antidemoncrat

Rock has more mass/volume than water and deep volcanic rock is more dense than surface rock. You can really see this in the Hawaiian Islands.


19 posted on 03/24/2026 1:37:40 PM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
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To: MtnClimber

“So it’s NOT that dress making you look fat.”


20 posted on 03/24/2026 1:38:02 PM PDT by Organic Panic ('Was I molested. I think so' - Ashley Biden in response to her father joining her in the show)
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