SafeNotAnOption

The Twitter account for the book Safe Is Not An Option: How a Futile Obsession With Getting Everyone Back Alive is Killing Our Expansion into Space.

[SafeNotAnOption @SafeNotAnOption]

Just which aspirations of Putin are there that we should be helping him achieve? I hope someone's going to ask him.

[Caolan @CaolanReports]

Jared Kushner says peace should be a “win-win” deal that helps Putin achieve his “aspirations.”

[Rand Simberg @Simberg_Space]

@JeffGreason While it's an overgeneralization, physicists tend to be better at telling you why something won't work than they are at figuring out how to make it work.

[Not-So-OK Boomer @Rand_Simberg]

Wendell Barry has passed, at age 92. He was virulently opposed to space settlements. Here is an exchange he had on the topic with Steward Brand in the 1970s: https://t.co/br68PNC7gG

[SafeNotAnOption @SafeNotAnOption]

The comments on this are appropriately brutal.

[Men's Health Mag @MensHealthMag]

Everyone's favorite science expert Bill Nye gives us a tour of his gym & fridge.

[Not-So-OK Boomer @Rand_Simberg]

Hmmm...probably Michael Mann. He owes me half a million bucks after his lawsuit against me.

[Rand Simberg @Simberg_Space]

Your occasional reminder that physics PhDs are not engineers. The physics PhDs told us that we couldn't do missile defense.

[SafeNotAnOption @SafeNotAnOption]

@Robotbeat I suspect there remains lingering skepticism that they can make it work.

[SafeNotAnOption @SafeNotAnOption]

@peterrhague That's funny, but Leibniz did come up with a superior notation, because it was easily applicable to independent variables other than time.

[SafeNotAnOption @SafeNotAnOption]

@Robotbeat NASA could have demonstrated it in the 90s after the broke DC-X, but instead they gave X-33 to the wrong company, then used it as an excuse to say that it proved that reusability was impossible.

[SafeNotAnOption @SafeNotAnOption]

@Rand_Simberg @gwen_novak9 @SpaceShow URL for the ceremony is https://t.co/xR50yBcz6i.

[SafeNotAnOption @SafeNotAnOption]

@WKCosmo NEVER

[SafeNotAnOption @SafeNotAnOption]

@MadTreeMan @enL3X1 @JamesRaxz Seat belts don't cost that much, but not clear how many lives ABS and airbags save.

[SafeNotAnOption @SafeNotAnOption]

Stop wasting money on this, and just cancel SLS already.

[Chandler G @Echo5550]

Earlier today, a paper was released talking about two potential solutions to adapting the Centaur V to SLS.

The proposal that caught my eye the most is “Suspended Centaur,” which allows NASA to fly with the same acceleration because the adapter would bear the load instead of the Centaur V. This could also potentially come from the same assembly line as the LVSAs. However, there are disadvantages, such as added weight and likely more work needed for ML-1 modifications.

[Victoria Samson @VSamson_DC]

Me on why this is a BFD: "When China figures out how to reuse them, that is going to drop the launch of cost for them tremendously and then they could use it as part of their soft power outreach to launch things for potential allies very cheaply." https://t.co/NFG17c0O5X

[varifrank @varifrank]

Because an entire generation was told that any degree was your ticket to big money, rather than specific degrees in specific areas. The result was every kid applied game theory and worked on the easiest possible degree to get the biggest gain, which was useless.

[Delta9250 @deltaIV9250]

Actually incredible how close Flight 12 was to shitting itself on ascent but the hand of fate felt bad about the 2025 V2 saga so SpaceX caught a lucky break for once

[SafeNotAnOption @SafeNotAnOption]

@deltaIV9250 Will they have enough delta V on their own to circularize?

[SafeNotAnOption @SafeNotAnOption]

@peterrhague Impossible!

[Sabine Hossenfelder @skdh]

The electric vehicle transition is not going as planned

https://t.co/F6s3DFCSaD

[SafeNotAnOption @SafeNotAnOption]

@UnwantedBlog There's another word for something with high energy density.