正在加载视频...

视频加载失败

The International Space Station rarely makes big changes to its orientation, but we were lucky to experience such maneuvers (flipping around to fly butt-first, then flipping back again) before and after each SpaceX CRS-33 reboost. This 60x speed timelapse was one of my favorites since it captures a little...

433,805 次观看 • 5 个月前 •via X (Twitter)

0 条评论

暂无评论

原始帖子的评论将显示在这里

相关视频

Elon Musk: My initial plan was not to start a rocket company. I just wanted to fund a one-time Oasis mission to Mars. “I started off initially with the idea of doing something in the space exploration arena. In fact, it wasn't actually with the idea of creating a company. It was initially with the thought of spurring interest in sending people to Mars. So I put together this idea called Mars Oasis, which was to send a small greenhouse to the surface of Mars and get people excited about the idea of going there and thus increase NASA's budget in order to make it happen. As I got more and more into that, I discovered that the real issue was that the cost of space transportation was really high, and it was getting worse. So we're used to technology getting better every year, but in some arenas it actually does not. It gets worse, particularly when you consider that in 1969 we were able to go to the moon and then we were unable to go beyond low Earth orbit. And now with the space shuttle retired, we're not even able to go to Earth orbit at all, even with people. That was not the right trajectory. So I actually went to Russia three times to look at buying an ICBM to launch this mission. Just very crazy. After my third trip of trying to negotiate with the Russians to buy an ICBM and I did actually get a deal, so figured out what it would cost and everything. But I concluded that my initial assumption had been wrong, that it was not a question of trying to generate more will to explore. Because I think the United States in particular is distillation of the human spirit of exploration. Space exploration is fundamental to the American psyche. But people really need to believe that it can be done and it's not going to break the bank if it does. So that's when I decided to start a rocket company. And I actually didn't think it would succeed and it almost didn't. We started off developing a small rocket which was kind of a scale model version. It was about 100,000 pounds of thrust. So big, you know, big, big by normal standards, but small for a rocket. And developed the engine and the airframe and the electronics and the guidance control system and then proceeded to have three failed launches in a row. And so for various technical reasons, the first three launches did not succeed in reaching orbit. Launches two and three did get to space, but they didn't achieve enough speed to reach orbital velocity. So this is 2008. And so we were heading into the recession and we had one rocket left. And fortunately in late 2008, that fourth launch did work and we made it to orbit. And then we won a NASA contract after that. And so fortunately things worked out. But if that fourth launch had not worked, then SpaceX wouldn't be around. So it was very close call. In fact, when I started I thought, okay, I've got enough money, I think I've got enough money for three launches. Fortunately, it was just enough to make that fourth one.” Montana Jobs Summit, September 16, 2013

ELON CLIPS

24,586 次观看 • 2 个月前

FNC Boaster: “These events are, as you can probably imagine, quite tiring. We go from the upper bracket into three games in a row for the final days. That, on top of lots of media, lots of features, lots of just random stuff that we do. Not to mention the fact that when we go into our games, there’s a lot of adrenaline. After every game, my body aches and my head hurts, and then we have to somehow get to sleep, and then we’ve got to wake up early and stuff. So there’s loads of factors into this. It’s not just simply, you go in and you play. And I think we started slow today, especially on Corrode and Lotus. A big map was Lotus for us, and we weren’t able to, just everything wasn’t going our way. The Odin was completely annihilating us. Then when we got to Abyss, we were like, ‘This is the last chance.’ And I felt very confident that we could win this one, because I felt like I knew everything they did on the attack side. And then, what were we like 1–11 down or something? I was like, ‘Oh bloody hell, this one’s going to be a tough one, isn’t it?’ We managed to do it, and then I was like, ‘Holy guacamole, the dream is alive!’ And it felt amazing, hearing the crowd and being able to just do that, because it would’ve been so disappointing of a final to just bomb out there. But in the FNATIC way, we fight back. Ascent, we’re starting to feel the kind of momentum. And then it gets to Sunset, a map that was the one kind of perma-ban we had, but we had some stuff on it. Unfortunately, it was just the crucial map for us to get the win, and some of the rounds just didn’t go our way, and that’s how VALORANT goes, you know. It felt like the rounds that we needed to win, we lost, and then they had an ultimate the next round, and that’s how brutal it is on defense. If we had just been able to win one of those rounds, like the bonus round, holy guacamole, we would’ve been loving life. And it was the difference of like a 1v1 in the end. So yeah, I mean, we tried our best. That’s why I’m not that [sad]. I am sad, obviously, but I’m not like how I was in Toronto, because I felt like we pushed, we tried our best, and I’m very happy with the boys. It would’ve been nice to win, but there’s only one winner, so it’s just a blessing to compete instead.” #VALORANTChampions via Pedro Romero

VALO2ASIA

159,942 次观看 • 10 个月前

Jason Citron on the growth hack that got Discord its first few thousand users “We started working on [Discord] in January 2015, and within I’d say two months, some of our friends were very excited about it but we didn’t really have any users. It was pretty clear they wanted to use it, it just wasn’t exactly correct. We rebuilt the voice chat engine three times, for example. But I’d say within 3-4 months, we had 20 DAU that weren’t us.” However, as Jason explains, growth stalled after those first 20 users: “We were like, ‘How do we get the word out?’ Because everyone was actually very skeptical about a group chat app for gaming. People would say, ‘This is the dumbest idea ever, no one is going to use this.’ And even people who played games, many of them thought, ‘Why would I want this? I already have whatever app I’m using.’ And so we were having a hard time getting other people to try it.” Jason recalls a period of 3-4 weeks sitting around thinking, “We like this, but maybe no one else does.” Then they figured out their growth unlock: “The unlock for us was inviting people to give feedback on the app, as opposed to saying, ‘Try this thing out we’re selling to you.’ What we actually did was we went to the Final Fantasy 14 subreddit, and we got one of our friends to make a post on the subreddit basically saying, ‘Hey, I’m trying out this new voice over IP app. What do y’all think about it?’” Jason continues: “People found it on Reddit, clicked on that link, went into the server, and then they were talking to us and trying it out. And they went back to the subreddit and were like, ‘Hey, this is pretty cool. I met the devs. They seem pretty cool.’ We got 50 users that day from that post and then that 50 turned into 100 the next day and it sort of started to snowball. And then we did this playbook for six months and that was basically the beginning of how it started growing.” Video source: The Twenty Minute VC Harry Stebbings (2024)

Startup Archive

20,407 次观看 • 8 个月前