Exoplanet Stats

[Helio]

There will never be a step improvement any greater then the second Vanguard back in 1957, when we avenged the failure of Vanguard I and finally put something into orbit. I was 5 years old and remember the fear in the adults because the Soviets had bested us. and then the overwhelming relief when we made it.

I was just 4 but I do recall, a few year later, the ongoing tension caused by Sputnik. I think I looked up one night hoping to see Sputnik, which had caused all the fuss. [They didn't mention it wasn't still up there. ]

The Moon landing I would still rate higher, likely because the Sputnik tension was not the latest and greatest threat from the Soviets.

Hopefully a Mars landing will come when there are very little world tensions. Wishful thinking, I suppose.

 

[billslugg]

Actually:
Sputnik went up 4 Oct 57
The dramatic US failure was Vanguard TV3 on 3 Nov 57.
Our first successful orbiter was Explorer 1 on 1 Feb 58
Vanguard 1 was 17 Mar 58
Vanguard 2 on 17 Feb 59

 

[ImmortalMelvz]

There's another milestone for America, the Golden Dome, what can you say about that?

 

[COLGeek]

There's another milestone for America, the Golden Dome, what can you say about that?

See this article and discussion: https://forums.space.com/threads/u-...lion-golden-dome-space-defense-program.71518/

 

[Helio]

Here's another way to present the HZ (Habitable Zone) planets. This shows how many of three different size ranges (too small, too large, just right) and their relative position in the HZ with bright green being in the more likely (conservative) zone.