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Astronomy Picture of the Day - Collapse in Hebes Chasma on Mars
NASA ^
| 15 Jul, 2025
| Image Credit & License: ESA/DLR/FU Berlin (G. Neukum)
Posted on 07/15/2025 12:19:21 PM PDT by MtnClimber
Explanation: What's happened in Hebes Chasma on Mars? Hebes Chasma is a depression just north of the enormous Valles Marineris canyon. Since the depression is unconnected to other surface features, it is unclear where the internal material went. Inside Hebes Chasma is Hebes Mensa, a 5 kilometer high mesa that appears to have undergone an unusual partial collapse -- a collapse that might be providing clues. The featured image, taken by ESA's robotic Mars Express spacecraft currently orbiting Mars, shows great details of the chasm and the unusual horseshoe shaped indentation in the central mesa. Material from the mesa appears to have flowed onto the floor of the chasm, while a possible dark layer appears to have pooled like ink on a downslope landing. One hypothesis holds that salty rock composes some lower layers in Hebes Chasma, with the salt dissolving in melted ice flows that drained through holes into an underground aquifer.
TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa
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To: MtnClimber
2
posted on
07/15/2025 12:19:56 PM PDT
by
MtnClimber
(For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
To: 21stCenturion; 21twelve; 4everontheRight; A Navy Vet; A_perfect_lady; abb; AFB-XYZ; AFPhys; ...
Pinging the APOD list
🪐 🌟 🌌 🍔
3
posted on
07/15/2025 12:21:49 PM PDT
by
MtnClimber
(For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
To: MtnClimber
That pic looks vaguely obscene.....................😁
4
posted on
07/15/2025 12:21:51 PM PDT
by
Red Badger
(Homeless veterans camp in the streets while illegals are put up in 5 Star hotels....................)
To: Red Badger
That's what I thought.
Warn a feller.
5
posted on
07/15/2025 12:28:06 PM PDT
by
TangoLimaSierra
(⭐⭐To the Left, The Truth is Right Wing Violence⭐⭐)
To: Red Badger
6
posted on
07/15/2025 12:30:53 PM PDT
by
No name given
( Anonymous is who you’ll know me as)
To: MtnClimber
wow, what a fantastic picture.
7
posted on
07/15/2025 12:32:15 PM PDT
by
BigFreakinToad
(All she is, is cackles in the wind.)
To: Red Badger
8
posted on
07/15/2025 12:33:45 PM PDT
by
Magnum44
(...against all enemies, foreign and domestic... )
To: MtnClimber
9
posted on
07/15/2025 12:41:08 PM PDT
by
BenLurkin
(The above is not a statement of fact. It is opinion or satire. Or both.)
To: MtnClimber
Quaid hit the reactor button.
To: MtnClimber; All
Looking straight down on it
11
posted on
07/15/2025 12:50:14 PM PDT
by
BenLurkin
(The above is not a statement of fact. It is opinion or satire. Or both.)
To: MtnClimber
It looks too much like an Earthly strip mine, complete with ramp.
What do you think, Giorgio?
"I'll smoke a few bowls and go check it out."
12
posted on
07/15/2025 1:02:31 PM PDT
by
MikelTackNailer
(Let the children use it. Let the children lose it. Let all the children boogie.)
To: MtnClimber
Thar’s OIL in them thar hills!
13
posted on
07/15/2025 1:03:23 PM PDT
by
normbal
(normbal. Non-native Tennessean.)
To: MtnClimber
Looks like a possum road kill.
To: Red Badger; MtnClimber
“That pic looks vaguely obscene.....................😁”
I suppose the ‘Face on Mars’ is on the exact opposite side of the planet...
15
posted on
07/15/2025 1:19:31 PM PDT
by
BBB333
(The Power Of Trump Compels You!)
To: BBB333
ISWYDT!......................😁
16
posted on
07/15/2025 1:20:11 PM PDT
by
Red Badger
(Homeless veterans camp in the streets while illegals are put up in 5 Star hotels....................)
To: BenLurkin
That’s definitely pornographic!
17
posted on
07/15/2025 1:32:49 PM PDT
by
TigersEye
(The Golden Age of MAGA is upon us!)
To: MtnClimber
Gives me a major case of the Hebe Jeebies
18
posted on
07/15/2025 1:35:43 PM PDT
by
Ronaldus Magnus III
(Do, or do not, there is no try - AND - Every Time You Fall Down, Get The Frak Up! )
To: MtnClimber
19
posted on
07/15/2025 2:09:32 PM PDT
by
VTenigma
(Conspiracy theory is the new "spoiler alert")
To: MtnClimber
Martian shooting range. They’re training up on the illudium q-36 explosive space modulator. There’s gonna be an earth-shattering Ka-BOOM this time.
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