The Apollo 1 exploded on take off.
Here's an additional fact
The Cassini-Huygens mission was one of the most expensive ever!
+1 more
The Explorer 1 satellite rotated left and right 12 times per second. No one knew why.
Im sorry I have not been able to post a fact in the past few weeks I forgot about it and I also wasn't able to do it.
@Corax about the appolo 1 I. Apologize
The others I got from an education book
@Diver "there wasn't any fuel in the cabin"
There was plenty of oxidizer in the cabin; just about everything else counts as fuel – cables, insulation, textiles, even people, brutal as it may sound.
If you're going to post "facts", please make double sure to get them straight.
Apollo 1 did neither explode, nor did it take off.
The capsule caught fire during a training session, killing the three astronauts inside.
"One of" the most expensive is true for everything, ever, if you think about it.
Cassini-Huygens certainly was a highly ambitious project, which may help explain the costs. Taking inflation into account, missions before and after have been equally or more expensive.
Explorer 1 did not "rotate left AND right" which is physically impossible. It started tumbling because of precession effects that simply were not well understood at the time. It should not come as a surprise that by exploring the boundaries of science and technology, new things will be learned.
Saturn V: 33,000 kN, payload to LEO: 118t, to TLI: 48t, flown 13 times;
Energia: 34,810 kN, payload to LEO: 100t, to TLI: -, flown twice.
Ariane V can launch up to eight secondary payloads with an ASAP (Ariane Structure for Auxiliary Payloads). Galileo satellites are launched in groups of four at a time.
And Yuri Gagarin being mistaken as an alien, yeah, that's a nice cozy story. Just about what I too would tell my folks back home when I came back from space, whistling patriotic songs all the way down ;)
@ThePrototype @Elonmuskjr you're both right. The take off sequence never even started from what I know
A spark ignited the cabin, which was filled with pure oxygen @Elonmuskjr
I am pretty sure Apollo 1 had a fire in the crew cabin and didn't even take off
Appolo 1 actualy caught fire during a practice runthrough for the luanch