Posted on 02/16/2021 3:22:31 PM PST by MtnClimber
Explanation: How hard is it to land safely on Mars? So hard that many more attempts have failed than succeeded. The next attempt will be on Thursday. The main problem is that the Martian atmosphere is too thick to ignore -- or it will melt your spacecraft. On the other hand, the atmosphere is too thin to rely on parachutes -- or your spacecraft will crash land. Therefore, as outlined in the featured video, the Perseverance lander will lose much of its high speed by deploying a huge parachute, but then switch to rockets, and finally, assuming everything goes right, culminate with a hovering Sky Crane that will slowly lower the car-sized Perseverance rover to the surface with ropes. It may sound crazy, but the Curiosity rover was placed on Mars using a similar method in 2012. From atmospheric entry to surface touch-down takes about seven minutes, all coordinated by an onboard computer because Mars is too far away for rapid interactive communication. During this time, humans on Earth will simply wait to hear if the landing was successful. Last week, UAE's Hope spacecraft successfully began orbiting Mars, followed a day later by the Chinese Tianwen-1 mission, which will likely schedule a landing of its own rover sometime in the next few months.
You know how they have “8-minute Abs”?
Now hold on.....what about “7-minute Abs”?
Don’t you dare suggest “6-minute Abs” are possible!
You know how they have “8-minute Abs”?
Now hold on.....what about “7-minute Abs”?
Don’t you dare suggest “6-minute Abs” are possible!
Hahahahahaha - I can’t resist - is this the Greenland or Nevada locale? Can’t remember now.
“How hard is it to land safely on Mars?”
You’d have to ask a real mathematician.
Yikes!
What is the value of Man landing on Mars, other than giving Engineers something to crow about?
Is there an expectation of having an endless supply of some precious mineral? That has also been said about the Moon, which is comparatively in Earth’s ‘backyard’.
Kitten at “simply wait”.
Nice to know 90% of NASA employees are female or ethnic. The real work is by the white males working in the labs, problem solving and building.
Cool mission, though.
We must regulate the Sun!!
Pass laws!!
I’d be happy if a small solar flare would add about 60-70 degrees to the frozen parts Midwest right about now.
No more than that. Oh, 70-80 degrees (F) more would be O.K. I suppose.
As long as I’m asking...
Sure, yeah, they’ll be a lot of melting snow and ice...........oh, floods...
We must regulate the Sun!!
Pass laws!!
I’d be happy if a small solar flare would add about 60-70 degrees to the frozen parts Midwest right about now.
No more than that. Oh, 70-80 degrees (F) more would be O.K. I suppose.
As long as I’m asking...
Sure, yeah, they’ll be a lot of melting snow and ice...........oh, floods...
Compared to the picture of Sun I posted, earth is so puny, the size of this period-——> .
“Nice to know 90% of NASA employees are female or ethnic.”
Is there anything other than wrongful discrimination against white males that could bring that about? In the real world, I mean, not in the leftwad pseudo-reality.
https://freerepublic.com/focus/f-chat/3920426/posts
“Compared to the picture of Sun I posted, earth is so puny, the size of this period-——> .”
Well, that may be your opinion, but I’m sure that man-made climate change on Earth is destroying the sun’s climate, too.
Because that’s how I feel. Don’t you feel it, too, or are you one of those horrible Trump people?
Interesting that UAE’s spacecraft “Hope” and the Chinese “Tianwen-1” also made it successfully to Mars orbits - no small task in itself.
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