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back to article Mars Orbiter spots FRESH IMPACT CRATER

NASA has announced the discovery of a fresh impact crater on Mars, and has released eye-popping pictures of the new hole taken by the Mars Orbiter's High Resolution Imaging Science Experiment (HiRISE). The orbiter can't provide certainty about when the crater first appeared, as HiRISE was only pressed into service after the less …

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While Mars gets a lot more tiny parking-lot dings due to its thin atmosphere, this one would have easily mde it through Earth's atmosphere.

Mars ejections would be further due to lower gravity there and the thinner atmosphere eating less of the kinetic energy, but this would still surely have been a few km of ejection radius if it had hit here.

Keep your heads down...

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Anonymous Coward

My anxiety levels have not risen, where's my safety hat?

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Boffin

"While Mars gets a lot more tiny parking-lot dings due to its thin atmosphere, this one would have easily mde it through Earth's atmosphere."

We don't know what size it was to begin with, only the crater impact size, but it'll certainly be a lot smaller than 30m, probably on the scale of 1m or less.

By comparison, it takes 20m objects to get through our atmosphere, as demonstrated in Chelyabinsk last year, and even that one didn't really create a crater.

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I would look for a Slaver in a stasis field in that crater, you can never be too sure.

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Facepalm

A miss doesn't count

Much smaller meteorites can penetrate the atmosphere. The Chelyabinsk left no crater because it "broke up" appx. 5 km above the ground. This breakup was estimated at @ 45 kilotons. I don't want that anywhere near my house.

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Happy

nice lump in middle too

A small crater, but it seems to have a small rebound lump in middle. Or is that the end of a Star Seed ?

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Re: nice lump in middle too

I see two lumps inside the crater on the hi-res version. Is the Star Seed twins or something more sinister? Maybe a lander and rover?

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Alien

Re: nice lump in middle too

Those are eyestalks!!

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Re: nice lump in middle too

O O

THIS IS THE VOICE OF THE MYSTERONS

O O

Curse you Captain Black! Why did you open fire on their city?

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Re: nice lump in middle too

It was the creatures from Klendathu, just their aim was a bit off.

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Alien

Mars Attacked!

Nice planet. We'll take it.

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Non-radial

It might be my old eyes but it does not look like the ejecta is as 'radial' as it should be?

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Re: Non-radial

It may be that the meteorite (if that is what it was, see above) came slightly from the 'south'. There could have been a strong southerly wind blowing?

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Re: Non-radial

The angle of impact is a much bigger factor than the Martian wind, given the average atmospheric pressure of 0.6kPa (versus Earth at 101kPa), and debris will be travelling at a significant proportion of the impact velocity (20km/s for a ballpark figure on the original meteorite, barely slowed down by the atmosphere). On Earth ejecta would be slowed to subsonic speeds fairly rapidly.

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Mushroom

We come....

....in pieces...

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Opportunity missed...

Yes. That. Maybe next time...

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looks like 'War of the Worlds' made it out of the solar system and its a pre-emptive strike by the Klendathu

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And don't forget that the asteroid belt is between Mars and Jupiter

so you have to expect more impacts of larger rocks

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Beagle 2 Found

see title

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So El Reg...

Is this site going to be investigated by Curiosity? How far away is this crater from our little atomic powered friend?

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Re: So El Reg...

No. Curiosity is travelling about 6 miles in a year - it would be showered in debris by now if it were even remotely in range.

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Bloody N(A)SA

First they spy on everyone on our little blue planet, now they've got their CCTV cameras monitoring alien planets as well. Is nowhere safe from their intrusion? Next they'll be bugging Opportunity and Curiosity's e-mail to check they aren't consorting with little green trrrrrsts.

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what REALLY happened

GR1nkzorg and Ukthagorroth were playing a game of interplanetary paintball. GR1nkzorg fired, but missed when Ukthagorroth suddenly ducked behind some convenient inner-system cover.

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Trollface

"the fresh crater appears blue in the enhanced colour of the image"

Translation: We clicked the "Auto White Balance" button.

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Anonymous Coward

the blue planet

Looks like Mars has hidden deposits of Lapis Lazuli!

Would be nice to see a correctly colour balanced image as well. Can't seem to find one on the NASA site.

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I have a strange suspicion...

...those two dots in the crater are a whale and a bowl of petunias.

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