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kottke.org posts about SpaceX

The latest SpaceX rocket launch and landing, start-to-finish

posted by Jason Kottke   May 01, 2017

This is cool. SpaceX has built a reusable rocket for launching things into space. The rocket takes off, separates from its payload, and then lands back on Earth, upright and intact on a landing pad. They’ve had several successful missions but this morning, they webcast the launch and return of the rocket with footage from long-range cameras and a camera fixed to the side of the rocket from start to finish.

The launch happens at 11:58, at 14:24 the main stage separates from the payload, and at 21:00, it’s on the ground — the whole thing is over in 9 minutes. And the views are super-clear (until clouds and exhaust from engines cloud the view right at the end) and the long continuous shot of the rocket is astounding…it looks totally fake, like out of a sci-fi movie.

Speaking of sci-fi, SpaceX CEO Elon Musk shared a better view of the rocket landing on Instagram…here it is on YouTube:

Look at the landing gear delicately fold down about 2 seconds before the landing. Looks totally CG! I’ve seen footage of these landings dozens of times and it’s still incredible.

Musk: SpaceX will start colonizing Mars in 7 years

posted by Jason Kottke   Sep 28, 2016

Yesterday, Elon Musk shared SpaceX’s plan for colonizing Mars. Gizmodo has a good overview of the plan.

SpaceX plans to build a “self-sustaining city” on Mars, according to its founder Elon Musk. But, while we now know a lot more about how SpaceX plans to get to Mars, details about how people will actually survive up there remain sketchy.

Musk dropped the news on Tuesday during an address at the International Astronautical Congress meeting in Guadalajara, Mexico, where he had promised to reveal how the company planned to send people to live on Mars.

“I don’t have an immediate doomsday prophecy,” said Musk, but he noted that he saw only two possible paths forward. “One path is to stay on Earth forever, and there will be some extinction event. The alternative is to become a multi-planetary species, which I hope you will agree is the right way to go.”

Musk says that human flights to Mars could start as soon as 2023. So audacious, I love it. I am so rooting for him to pull this off.

Update: Wait But Why has a characteristically entertaining and informative piece about SpaceX’s Big Fucking Rocket.

“It’s so mind-blowing. It blows my mind, and I see it every week.”

Elon’s pumped. And when you learn about the big fucking rocket he’s building, you’ll understand why.

First, let’s absorb the challenge at hand. It’s often said that space is hard. To this day, only a few hundred people have been in space, only a few countries have the ability to launch something into space, and the history of human space travel is littered with tragic launch failures. Firing something super heavy and delicate and full of explosive liquid up through the atmosphere without anything going wrong is incredibly hard.

But when we talk about humans going into space, we’re talking mostly about humans going into Low Earth Orbit, a layer of space between 100 and 1,200 miles above the ground — and normally, they’re headed only 250 miles up to the International Space Station. The only time humans have gone farther were the small handful of Americans who made it out to the moon in the 1960s, traveling about 250,000 miles away.

When Earth and Mars are at their closest, Mars is somewhere between 34 and 60 million miles away — about 200 times farther away than the moon and about 200,000 times farther away than the ISS.

The moon is just over one light second away.

Mars is more than three light minutes away.

Mars is far.

Bezos’ rocket achieves controlled landing back on Earth

posted by Jason Kottke   Nov 24, 2015

A rocket built by Blue Origin, an aerospace company backed by Jeff Bezos, recently reached space and executed a controlled landing back on Earth, which allows it to be used again. Bezos himself joined Twitter1 this morning to announce the news. Elon Musk, whose SpaceX company has been trying (and failing) to do something similar lately, congratulated Bezos and his team on Twitter2 but also threw a little shade on BO’s efforts to reach “space” vs. SpaceX’s efforts to reach “orbit”.

It is, however, important to clear up the difference between “space” and “orbit”, as described well by https://what-if.xkcd.com/58/. Getting to space needs ~Mach 3, but GTO orbit requires ~Mach 30. The energy needed is the square, i.e. 9 units for space and 900 for orbit.

Welcome to Twitter, Jeff.

  1. I like his bio: “Amazon, Blue Origin, Washington Post”.

  2. Musk’s bio reads: “Tesla, SpaceX, SolarCity & PayPal”. Oh, these boys and their toys.