Author Topic: NASAS rover lands on mars, send back pics.  (Read 597 times)

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Offline powderman

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NASAS rover lands on mars, send back pics.
« on: February 18, 2021, 01:08:45 PM »
   
NASAS rover lands on mars, send back pics.
« on: Today at 07:06:28 PM »

https://www.foxnews.com/science/nasas-perseverance-rover-lands-on-mars

NASA's Perseverance rover lands on Mars
Perseverance, the most technologically advanced robot NASA has sent to date, will remain on Mars for nearly two years, searching for signs of ancient life and exploring the red planet's surface.
By Lucas Manfredi | Fox News

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NASA has unveiled the first pictures from its fifth Mars rover, Perseverance, after a successful landing on the red planet's Jezero crater at approximately 3:55 p.m. Thursday.

"This landing is one of those pivotal moments for NASA, the United States, and space exploration globally – when we know we are on the cusp of discovery and sharpening our pencils, so to speak, to rewrite the textbooks," acting NASA Administrator Steve Jurczyk said in a press release. "The Mars 2020 Perseverance mission embodies our nation’s spirit of persevering even in the most challenging of situations, inspiring, and advancing science and exploration."


Perseverance, the most technologically advanced robot NASA has sent to date, traveled 293 million miles to reach Mars over the course of more than six months after launching on a United Launch Alliance Atlas V rocket from Cape Canaveral Space Station on July 30. It will remain on Mars for nearly two years, searching for signs of ancient life and exploring the planet's surface.

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The mission will help prepare the agency for future human exploration on Mars in the 2030s.

'BUILDING BLOCKS OF LIFE EXIST' ON MARS, FORMER NASA ADMINISTRATOR CONFIRMS

The $2.7 billion rover, built in NASA's Jet Propulsion Laboratory in Pasadena, Calif., is about 10 feet long, 9 feet wide, seven feet tall and about 2,260 pounds, roughly 278 pounds heavier than its predecessor, Curiosity.

Perserverance is designed to drive an average of 650 feet per Martian day and features seven scientific instruments, a robotic arm that reaches about seven feet long, a rock drill. It is nuclear powered, using a plutonium generator provided by the U.S. Department of Energy.


The scientific instruments on the rover include a camera designed to take high-definition video, panoramic color and 3D images of the Martian surface and features in the atmosphere with a zoom lens to magnify distant targets, a group of sensors to measure weather and monitor dust on the planet's surface, a system that will be used to produce oxygen from the Martian carbon-dioxide atmosphere, an x-ray and camera system that can measure the chemical makeup of rocks and analyze features as small as a grain of salt, a ground-penetrating radar system to analyze geologic features under Mars' surface, a group of cameras, spectrometers, and a laser to search for organics and minerals as well as take clse up images of rock grains and surface textures, and a camera to identify the chemical composition of rocks and soils, including their atomic and molecular makeup.

In addition, the rover carries a commemorative plate to honor COVID-19 healthcare workers and has the names of 10.9 million people stenciled into three of its silicon chips with the words "Explore as one" written in Morse code.

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Perseverance’s landing involved the "seven minutes of terror," a fiery atmospheric entry in a protective capsule which involved a parachute-assisted descent. The "seven minutes of terror" is referred to by NASA engineers as the time it takes to enter the Martian atmosphere and descend to the surface.

The spacecraft is guided solely by pre-programmed controls in its onboard computer, due to a roughly 11 minute signal delay between Earth and Mars.

Perseverance entered into the atmosphere at about 12,100 miles per hour in a protective capsule. The spacecraft then deployed a parachute to begin slowing down before removing its protective capsule and heat shield. The rover's landing mechanism then fired eight rocket thrusters to slow down from about 170 miles per hour to about two miles per hour and guide it to a proper landing spot before using a sky crane to lower onto Mars’ surface.

Perseverance landed in the Jezero Crater, a 28-mile-wide basin in the northern hemisphere of Mars, where NASA believes a body of water about the size of Lake Tahoe used to flow. The Perseverance science team believes this ancient river delta and lake deposits could have collected and preserved organic molecules and other potential signs of microbial life.

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Perseverance is also carrying the Ingenuity helicopter, a technology demonstration that will attempt the first powered, controlled flight on another planet.

Ingenuinity will be deployed in a few months from underneath the rover in a flat area. Perseverance will then drive about 330 feet away to capture the flight attempt with its cameras. Once Ingenuity’s test flights are complete, the rover’s search for evidence of ancient microbial life will begin.

Subsequent NASA missions, in cooperation with the European Space Agency, will send spacecrafts to Mars to collect the cached samples recovered from the surface and return them to Earth for in-depth analysis.
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Offline Argent 88

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Re: NASAS rover lands on mars, send back pics.
« Reply #1 on: February 18, 2021, 01:52:07 PM »
Where are these pics everyone is talking about? Space.com says they have some, but they haven't posted them yet. Neither has Foxnews.

Offline Goldie

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Re: NASAS rover lands on mars, send back pics.
« Reply #2 on: February 18, 2021, 02:32:52 PM »
It shows it on space.com. no problem here.

Offline Graybeard

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Re: NASAS rover lands on mars, send back pics.
« Reply #3 on: February 18, 2021, 05:26:44 PM »
Here is the first image:



and the second:



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Offline DDZ

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Re: NASAS rover lands on mars, send back pics.
« Reply #4 on: February 19, 2021, 05:11:23 AM »
Have to wonder what the cost was to get pictures of a desert. 
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Offline Argent 88

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Re: NASAS rover lands on mars, send back pics.
« Reply #5 on: February 19, 2021, 10:04:35 AM »
Let's see here.
2 billion dollar project and they put a 2 megapixel camera on the unit and transmit at 1G. Huh? Looks like a 2nd grader took those pics with a pinhole camera. Where's the technology.? I don't think too many space experts on earth are impressed so far.

Compare with Voyager 1975 pictures, which are spectacular. Rangers pics did too.
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And even the old Viking landers pics looked better than that.

Offline Argent 88

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Re: NASAS rover lands on mars, send back pics.
« Reply #6 on: February 19, 2021, 10:09:58 AM »
It shows it on space.com. no problem here.

I just looked, only one pic when there were three.

Offline BUGEYE

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Re: NASAS rover lands on mars, send back pics.
« Reply #7 on: February 19, 2021, 02:04:45 PM »
It looks like they smeared some vaseline on the camera lens and took a picture of the moon rover practice area at the cape.
Wait, did they?? :o
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Offline Land_Owner

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Re: NASAS rover lands on mars, send back pics.
« Reply #8 on: February 20, 2021, 12:39:59 AM »
Filmed on the same stage as "Capricorn 1".

Saw the image Graybeard posted, captioned, "First Image from Mars", with a grainy B/W image in the middle of it of Bernie Sanders in his mittens.  Good meme...

Imo, many photographs that NASA shows have been colored rendered - color images of galaxies, nebula, space dust, Saturn's rings, etc.  Someone sits in a dark room, on their computer, and electronically colors (renders, "doctors") the images to what THEY THINK it should look like in color then shows those.

It takes a LOT of power from a tiny "power starved" rover so far from its Sun based technology to send even B/W photos back to Earth.  Gathering the coded data sent from the rover when the Earth is AT BEST 35 MILLION miles from Mars, at worst 249 million miles, and 140 million miles on average, is no small feat.  The tiny rover signal degrades across the heavenly airways.  It begins as a very weak signal from the rover and is a SIGNIFICANTLY WORSE signal by the time it travels 140 million miles back to Earth.

A color photograph file is larger and longer (meaning greater power loss to send) than the same image file in B/W.  It serves NASA's Public Image to render color images AFTER they are received as B/W photos.  "Color by Disney" in NASA's Fantasyland is my thinking...thus "Capricorn 1".

Offline Argent 88

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Re: NASAS rover lands on mars, send back pics.
« Reply #9 on: February 20, 2021, 05:00:07 AM »
Why would it take alot of wattage to send an image signal thru space? To a relay satellite? At gigabytes per second?

Space is a void _ _ there's no interference.
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A lot of radiation out there, all up and down the spectrum. I saw this morning where those pics had been colorized.

Offline BUGEYE

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Re: NASAS rover lands on mars, send back pics.
« Reply #10 on: February 20, 2021, 08:07:06 AM »
Why would it take alot of wattage to send an image signal thru space? To a relay satellite? At gigabytes per second?

Space is a void _ _ there's no interference.
.
.TM7
Could you get a satellite to orbit halfway between here and there??
The moon or something else could pull it away from earths gravity, even if our gravity could reach that far.
And, if it was plausible, NASA would have thought of it and put one out there.
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Offline Argent 88

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Re: NASAS rover lands on mars, send back pics.
« Reply #11 on: February 20, 2021, 09:10:27 AM »
Musk wants to put a powerful communication Satellite into orbit around Mars. Once we establish a VLR on Mars all that wouldn't be necessary. The problem isn't us sending there, it's there sending here.