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Old May 31st, 2021 #41
Ray Allan
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Originally Posted by Nikola Bijeliti View Post
A couple of interesting takes from the video:
  1. Every Soviet or Russian lander to reach Mars crashed.
  2. There was not a single missin to Mars in the 1980's. That was the decade of the Grand Tour of the Outer Planets. We managed to send a probe up Uranus but not Mars.
Mars-3 soft-landed - the first probe to do so - but contact was lost 22 seconds after touchdown, probably due to the dust storm encircling Mars at the time, and no data was returned.

The Soviet Union launched Fobos-1 and Fobos-2 in 1988, but they were failures. Fobos-1 returned a few photos but went silent as it approached Mars' moon Phobos in March 1989.

A probe up Uranus.

That would be Voyager 2's flyby in 1986.
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Old May 31st, 2021 #42
Nikola Bijeliti
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A probe up Uranus.

That would be Voyager 2's flyby in 1986.
What's really strange is that two days after the flyby the space shuttle Challenger exploded during ascent. So, for those of you with a morbid sense of humor, I came up with the following (sick) joke:
St. Peter said to God: "NASA just sent a probe up Uranus!"

Two days later, the space shuttle Challenger exploded.
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Old June 2nd, 2021 #43
Ray Allan
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Default Uranus sure has gotten a 'bum' rap




NASA and ESA have been studying concepts to launch an orbiter and probe up Uranus as a follow-on to Voyager 2's visit. If funded, it will launch in the late 2020s, arriving at Uranus before 2043.

https://infogalactic.com/info/Uranus_orbiter_and_probe
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Old June 11th, 2021 #44
Ray Allan
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NASA Perseverance rover begins 1st science campaign on Mars

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NASA's Perseverance rover has kicked off its highly anticipated science campaign with a Red Planet road trip.

The car-sized Perseverance landed inside Mars' 28-mile-wide (45 kilometers) Jezero Crater on Feb. 18. The six-wheeled robot's first few months on the Red Planet were devoted primarily to performing health and instrument checkouts and documenting the pioneering flights of NASA's Ingenuity helicopter, which traveled to Mars on Perseverance's belly.

But Perseverance and its systems are now pretty much up to speed, and Ingenuity has wrapped up its technology demonstrating flight campaign and moved on to an extended mission that requires less support and supervision. So the rover has begun to sink its teeth into its own science mission, which focuses on searching for signs of ancient Mars life and collecting samples for future return to Earth.
https://www.space.com/nasa-persevera...s-science-road
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Old August 22nd, 2021 #45
Ray Allan
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Default Ingenuity 12th flight

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Old September 11th, 2021 #46
Ray Allan
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Default First sample collected

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Old September 11th, 2021 #47
Hugo Böse
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NASA and ESA have been studying concepts to launch an orbiter and probe up Uranus as a follow-on to Voyager 2's visit. If funded, it will launch in the late 2020s, arriving at Uranus before 2043.

https://infogalactic.com/info/Uranus_orbiter_and_probe
That sure will take an awful long time. I wonder how fast they could get there with current technology if they were less constrained by funding. For example could they not use a bigger rocket to accelerate it longer, and they not could use ion engines powered by a combination of solar panels and an RTG.
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Last edited by Hugo Böse; September 11th, 2021 at 07:03 AM.
 
Old September 11th, 2021 #48
Ray Allan
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That sure will take an awful long time. I wonder how fast they could get there with current technology if they were less constrained by funding. For example could they not use a bigger rocket to accelerate it longer, and they not could use ion engines powered by a combination of solar panels and an RTG.
Funding is a big factor in most of it. Ion engines have been used on many craft, however, ion engines have a very low thrust and take a long time to reach a higher velocity. But they do have the advantage of being able to operate for long periods of time and eventually build up a respectable speed. The best thing to use for interplanetary travel with our current technology is a nuclear rocket engine which can produce velocities considerably greater than chemical rockets. The NERVA nuclear rocket was tested in protoype form by NASA in the 1960s for a manned Mars mission, but lack of funding has prevented them from being developed further. NASA, and the Russian space agency Roskosmos are currently planning both nuclear electric (ion engines powered by RTGs or a nuclear reactor) and nuclear thermal propulsion (a nuclear rocket). So hopefully we will finally see these in the next decade or so to cut down on the very long travel times, which would naturally be useful for human space missions.
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