Thank you very much, I will use this from now on.

"Failure is not an Option" was never said during the Apollo program, it was invented for the movie. NASA pretty famously failed a lot early on but what they learned during those failures eventually got us to the moon. This article essentially says that we should be taking more risks in the name of innovation, EXACTLY like the Apollo program. So I guess you are completely right, one of those philosophies did get us to the moon: the second one.

One of them is appropriate for human missions and expensive flagship robotic missions, the other is appropriate for cheap/quick missions that are easily replaceable.

https://archive.is/

Paste the article URL into the bottom search to see if somebody archived it already. If they haven't, paste it into the top one to do so.

They actually have a Chrome extension also that makes it one click

You are not being unreasonable.

One of those philosophies also killed 3 astronauts and very nearly killed 3 more if not for some quick thinking by the crew.

So y'know, not quite that simple.

How do you guys get around the paywall? Am I being unreasonable for not wanting to have to pay for a subscription?

“Failure is not an option.”

“Failure is acceptable, sometimes.”

One of these two philosophies got us to the Moon. They are not the same.

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What worst humanity hasn't seen yet?

That's a great picture.

Some of them can be seen with smaller telescopes: https://en.wikipedia.org/wiki/List_of_directly_imaged_exoplanets

What kind of resolution are you looking for? How many times magnification? You can see things more than a light year away now. You can see the Andromeda Galaxy with the naked eye and that's millions of light years away.

With a big enough aperture and enough time you could see the surface of the nearest exoplanets. But that would require something with an aperture the size of the moon or jupiter.

There is no limit to how far you can see, if the object is bright enough.

Your eyes can see individual stars that are up to 16,000 lightyears away. You can also see the diffuse glow of the galactic core, which is around 25,000 lightyears away. And on a dark night you can even spot the glow of the Andromeda galaxy, which is 2,500,000 lightyears away.

A telescope doesn't change how far you can see; it changes how faint of an object you can see. An object that is twice as far away has to be four times as bright for you to be able to see it. An object that is 10 times as far away has to be 100 times as bright for you to be able to see it. Telescopes collect light from a large area and focus it into a smaller area, allowing you to see objects that would ordinarily be too dim.

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Because of how they work, it makes more sense to talk about a telescope's light gathering ability and angular resolution than how far it can see. If you're including a specific detector (your eyes, some CCD, whatever), you can also directly talk about the faintest objects possible.

you can see stars without a telescope, they are more than 1 light year away

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A deep seated appreciation for 80's horror movies tells me a green comet is not a good thing.

I know, it has been removed, cos not related to space, and here I was thinking where the heck those planets or even the Solar System located

Love it

I meant it would be terrifying because, you know, space scary, I'd still do it

Come on, you know what mean, close distance, like orbiting them

It'd be terrifying if this didn't go to r/ask instead of here.