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NASA Perseverance Rover heads to Mars -- Houston, we have a helicopter

DragoonKain

Neighbours from Hell
One of the things I think about.

We don't know for certain if there's other life out there. I believe it's highly likely given that there's just too many planets out there with the potential for it.

However, even if there is other life out there, most planets in the universe will not have life or even have the ability to ever get life given their conditions. Which also makes me think about the meaning of life. If most of the universe is without life then you can look at it two ways. Either that makes life more precious because its rarer. Or the majority of the universe just exists with life as the exception and life in itself is kind of irrelevant, just a biological fluke that happens to pop up in a vast ocean of meaningless randomness with no overall purpose other than to exist.
 

nkarafo

Member
I know there are high quality pictures and all but where are the videos?

Other than the landing, we don't get how the place looks when the rover is moving or it rotates it's cameras.
 

GeorgPrime

Banned
I know there are high quality pictures and all but where are the videos?

Other than the landing, we don't get how the place looks when the rover is moving or it rotates it's cameras.

They recorded a HD 8K 10 minutes video and are now sending it with 1 Kbps from Mars to earth
 
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TheContact

Member


this is one of the coolest things i've ever seen in my life.

They recorded a HD 8K 10 minutes video and are now sending it with 1 Kbps from Mars to earth

between 0.625 Kbps and 4 Kbps actually =p

Data Rates/Returns

The data rate direct-to-Earth varies from about 500 bits per second to 32,000 bits per second (roughly half as fast as a standard home modem). The data rate to the Mars Reconnaissance Orbiter is selected automatically and continuously during communications and can be as high as 2 million bits per second. The data rate to the Odyssey orbiter is a selectable 128,000 or 256,000 bits per second (4-8 times faster than a home modem).


An orbiter passes over the rover and is in the vicinity of the sky to communicate with the rover for about eight minutes at a time, per sol. In that time, between 100 and 250 megabits of data can be transmitted to an orbiter. That same 250 megabits would take up to 20 hours to transmit direct to Earth! The rover can only transmit direct-to-Earth for a few hours a day due to power limitations or conflicts with other planned activities, even though Earth may be in view much longer.


Mars is rotating on its own axis so Mars often "turns its back" to Earth, taking the rover with it. The rover is turned out of the field of view of Earth and goes "dark," just like nighttime on Earth, when the sun goes out of the field of view of Earth at a certain location when the Earth turns its "back" to the sun. The orbiters can see Earth for about 2/3 of each orbit, or about 16 hours a day. They can send much more data direct-to-Earth than the rover, not only because they can see Earth longer, but also because they have a lot of power and bigger antennas than the rover.
 
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Romulus

Member
Pretty cool. Makes me think about the logistical nightmare it was to cross from the UK to the Americas in the 1600s, and now we do it in a few hours with no problems at all, blasting over the water in a tube of metal. Imagine telling people that would be possible in the 1600s, then trying to explain to astronomers of that time that we would land on Mars with Rovers and eventually humans.

Would be interesting to see what will be possible in the future and them trying to explain their achievements to us. "Hell no!" just imagine all the doubters listening to someone in 500 years explain what's possible. "Impossible!!!" lol then imagine 10,000 or 50,000 years from now when we're literally ancient humans.
 
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QSD

Member
We can send suicide probes.

The russians (who else?) sent a few of these kamikaze probes. The record for survival in Venus was set by Venerea 13 at a whopping 57 minutes.
Venus is like the earth but with a greenhouse effect gone crazy. It's actually so fitting that russia picked venus to go to with their reputation for heavy duty engineering. They failed so many times, but got there in the end. Few know what it is that they actually found there, but rumors include a shit ton of SUV's and pamphlets denouncing the illegalization of fracking.
 

Data Rates/Returns

The data rate direct-to-Earth varies from about 500 bits per second to 32,000 bits per second (roughly half as fast as a standard home modem). The data rate to the Mars Reconnaissance Orbiter is selected automatically and continuously during communications and can be as high as 2 million bits per second. The data rate to the Odyssey orbiter is a selectable 128,000 or 256,000 bits per second (4-8 times faster than a home modem).

Which is still mindblowing coming from another planet.

I was expecting something like AOL telephone modem times.

Mars is rotating on its own axis so Mars often "turns its back" to Earth, taking the rover with it. The rover is turned out of the field of view of Earth and goes "dark," just like nighttime on Earth, when the sun goes out of the field of view of Earth at a certain location when the Earth turns its "back" to the sun. The orbiters can see Earth for about 2/3 of each orbit, or about 16 hours a day. They can send much more data direct-to-Earth than the rover, not only because they can see Earth longer, but also because they have a lot of power and bigger antennas than the rover.

Elon better be getting some Starlink satellites to Mars ASAP so they can stream the right way.
 
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Someone sent me this on WhatsApp
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