Not good and zero. Mars, with an 1.52 AU orbit, is just within the 1.70 AU outer limits of the habitable zone as defined by the "maximum greenhouse" limit. But its mass is too small to hold onto an atmosphere and sustain the geologic activity support the carbonate-silicate cycle that acts as a thermostat on rocky planets. Studies suggest that a planet needs to be twice the mass of Mars to do that. The inner edge of the conservatively defined habitable zone is 0.97 AU. Venus, with an 0.72 AU orbit, is too close to the Sun to be habitable by this definition (contrary to claims frequently found in the popular press).

There's a lot of research into fixing it.

My favorite solution is space lasers. Basically, have a system of lasers in space, even just a few watts for each laser, and target all the tiny pieces of space junk. Similar to how a comet gets a tail when the sun shines on it, a powerful laser would melt bits of the space junk, causing it to lose velocity, and drop out of orbit.

The reason why this hasn't been done, is because the problem isn't yet big enough for it to be done.

It's currently still very unlikely for a cascade like this to begin, but as we put more into space, the chances just keep getting higher.

I think it'll be like the climate crisis, we'll wait until we feel the effects, and then do something to change it while hoping it's not too late.

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Japan launched a small scale RDE into space on a sounding rocket. Iirc they ran it for a few seconds in a vacuum.

I'm sure they could figure out a way to use the temperature of outside the space craft for cooling. As soon as I read your comment I did a quick look and it's -455f or something similar. I guess an issue could be heat exchange from a vacuum to whatever the cooling system is, but that's above my brain grade.

Edit: temperature I'm referring to is the vacuum of space.

Looks like there's 3 launches from Vandenberg slated for February and another in March that will land at the pad

shockwaves are sent through the fuel as it’s combusted

from what i gather, no. RDRE is basically sourcing its fuel pressure from detonations rather than a turbo pump, eliminating an auxiliary system that consumes energy. i’m not sure about anime

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Yes. But countries don't have morals. They have interests.

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SL-8 is a U.S. Department of Defense nomenclature for the Kosmos-3 family of Soviet rockets that first entered service in 1964

If we found an exact copy of our solar system 100 Ly away, what odds would we give mars and Venus for having life with the observational techniques we possess today

Also the fact that we've been sending up plutonium for decades already without a single failure

The difference between paying for a public internet and paying for a private company's content is not needlessly pedantic.

There's an app called SpaceXNow with schedule of all launches, location and weather or not they'll be returning to land at the pad

Hall thrusters are also great, hope to one say see them both in action

Indeed. Nuclear space propulsion is the only option for meaningful space exploration and industrialization, just like how Nuclear power generation is the only carbon-free, long term solution on Earth that is really feasible at scale.

It's staggering how much damage to the environment has been caused by well-meaners who established the kneejerk anti-nuclear culture.

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Yes. A complete moral failure. Just like this continued amoral cooperation with Russia.

Scott Manley does a lot of really good videos. Highly recommend.

Took them long enough, good god 50 years without any development at all

I am not 100% sure I understand what you were asking, so I will give the simple things as to this planet. It is approximately the right size and mass to have the potential of a stable atmosphere (near earth size) and also in the habitable zone of its star. While a lot of factors can play into these things, having an atmosphere without being massive and super heavy, while also having a temperature range that allows for constant liquid water, are two big check marks on habitability.

It’s all circumstantial and debatable. The Mars meteors with embedded gasses that “can only be explained through microbial life” has been disputed/explained as well.

The headlines are sensationalized but after it’s actually published, peer reviewed, and counter argued — well, those don’t make the front page 🤷‍♂️