bps.space

Joe Barnard of BPS.space shows his model rocket Scout F landing vertically like a SpaceX booster after seven years of attempts. The video documents the successful landing and the build-up to it.

Patrick Boyle analyzes SpaceX's IPO prospectus, covering its financials, speculative products, AI business, related-party dealings, compensation, and a governance structure with minimal shareholder rights.

Scott Manley explains the thermal balance of spacecraft and how a satellite could be configured to radiate away the heat from datacenter-scale computing in space. His rough numbers suggest it is feasible.

Theoretical physicist Nima Arkani-Hamed gives a public talk on why spacetime may not be fundamental and what might replace it, including newer approaches to scattering amplitudes.

Thunderf00t's critique of SpaceX's claims, arguing its launches are not actually cheaper than competitors or the Space Shuttle. It questions the economics of reusability.

A clip of Sandy Munro, a veteran automotive engineer, describing his visit to a SpaceX Starship design review and meeting Elon Musk. He says he was struck by how deeply Musk is involved in engineering.

Patrick Boyle examines SpaceX's planned IPO at a roughly $1.75 trillion valuation. He covers the merging of other Musk companies, orbital data center claims and the fast-track index rules that may help the listing.

Joe Scott takes a serious look at space sunshades as a climate fix, asking how big they would need to be, what they would cost and whether they would work. He draws on Roger Angel's paper and launch options.

EEVblog's Dave Jones critiques Reflect Orbital's plan to sell sunlight to solar farms after dark using orbital mirrors. He walks through the numbers to show the idea does not work out.

NASASpaceflight's 24/7 live stream from SpaceX's Starbase in Boca Chica, Texas, showing Starship and Super Heavy development, testing and launches.

Sasha Rush surveys linear RNNs and state space models as replacements for attention in transformer-style models, in a talk for MLSys. It covers the foundational preliminaries and predates Mamba.

Scott Manley examines why SpaceX, Google and others are looking at orbital data centers. He walks through the economics, heat rejection and solar power arguments, with links to the Lumen/Starcloud and Google Suncatcher papers.

A CNN segment showing William Shatner emotionally describing his Blue Origin suborbital flight to Jeff Bezos right after landing.

NCommander investigates why Space Cadet Pinball disappeared from Windows Vista, building on Raymond Chen's explanation about 64-bit incompatibility. He tests it on 64-bit Windows including Itanium and walks through the debugging.

EEVblog interviews Richard Stephenson of NASA's Canberra Deep Space Communications Complex about how the 70m DSS-43 dish is used to contact Voyager 2. It covers the ground antenna and low-noise receiver side of deep space communication. This is a 2023 re-release of a 2017 video.

A Huberman Lab episode on setting up a workspace for productivity, focus and creativity, covering light, posture, movement and sound. It touches on ideas like ceiling height and the effect of screens on the brain.

A JuliaCon talk by a NASA Launch Services Program engineer on modeling spacecraft separation dynamics in Julia. He describes replacing a Simulink-based workflow for checking launch vehicle separation requirements with Julia and ModelingToolkit, with large speedups and much shorter code.

Tim Dodd of Everyday Astronaut gets a close-up walkthrough of SpaceX's Raptor 2 engine from Elon Musk at Starbase. They cover how Raptor 2 was simplified and upgraded relative to Raptor 1, including cooling and thrust vectoring details.

A short clip from the Netflix series Space Force in which John Malkovich's character delivers a profanity-laden rant about Microsoft.

A one-minute clip of William Shatner trying to describe the awe of space after a Blue Origin flight while Jeff Bezos sprays champagne.

Lex Fridman's long conversation with Elon Musk covering SpaceX, Mars, Tesla Autopilot and self-driving, robotics and AI.

Tim Dodd of Everyday Astronaut tours SpaceX's Starbase with Elon Musk as guide. They cover the high bay, grid fins, Raptor V2, the HLS lander and stage separation, and Musk explains his engineering management process.

2swap explains how he solved the Klotski sliding-block puzzle by mapping its full state space as a graph and visualizing it. The video includes footage of the Guinness world-record solve and links to an interactive graph.

Real Engineering explains the engineering behind the James Webb Space Telescope, including its folding mirror, sunshield, orbit and cooling systems, and why deployment was so difficult.

The first of an eight-part ScienceClic series building general relativity, covering worldlines, proper time and coordinate systems with animated visualizations.

Scott Manley looks at SpinLaunch, which aims to throw launch vehicles out of a spinning launcher at hypersonic speed. He covers its recent Mach 1 test of a one-third scale launcher and the engineering problems that remain.

Everyday Astronaut takes a tour of SpaceX's Starbase with Elon Musk as guide. Topics include the Raptor engines, launch escape systems, the heat shield and the first orbital test.

Scott Manley analyzes the idea of putting data centers in orbit, prompted by Lumen Orbit's funding. He examines the claimed advantage of constant solar power against launch cost, cooling and mass.

Netflix engineer Drew Gallatin explains how Netflix serves TLS-encrypted video at 400Gb/s from a single FreeBSD server. He covers NUMA, kernel TLS, hardware TLS offload and the memory bandwidth and PCIe bottlenecks they hit.

PBS Space Time explains the proposal to use the Sun's gravity as a giant lens, sending a train of small light-sail spacecraft to the focal point roughly 550 AU out. It covers how such a telescope could image exoplanets in surprising detail and the engineering challenges involved.

A PBS Space Time episode on how the Higgs mechanism gives particles mass, prompted by Fermilab's heavier-than-expected W boson measurement. It goes beyond the usual pop-science treatment without heavy math.

Eager Space examines the practicality of putting data centers in orbit, walking through three scenarios with cost calculations and the launch cost reductions that would be required.

A PBS Space Time episode explaining the Fermilab Muon g-2 results and why a discrepancy with the Standard Model prediction could point to new physics.

PBS Space Time examines Roger Penrose's idea that consciousness arises from quantum processes in the brain, and reviews new evidence about microtubules. It ends with an estimate of what replicating consciousness would demand.

PBS Space Time explores whether time causes gravity, explaining that gravity does not truly warp the flow of time but arises from time gradients. It revisits how gravitational time dilation works in general relativity.

A PBS Space Time episode on fuzzballs, the string-theory proposal for black holes that replaces the singularity with a tangle of strings. It explains why black holes seem to both have to exist and break known physics.

PBS Space Time considers whether life could be based on silicon instead of carbon, comparing the two elements' chemistry and why silicon is the most plausible alternative.

A PBS Space Time episode asking whether our universe could sit inside a black hole. It covers what physicists think happens inside black holes and the arguments for and against this idea.

PBS Space Time examines the Silurian hypothesis, the idea that an industrial civilization could have existed on Earth before humans. It looks at what traces such a civilization might leave in the geological record.

SpaceX's livestream of the Starship SN8 high-altitude test on December 9, 2020. It ascended, did the landing flip with flap control and reached the landing point, but touched down hard because of low header tank pressure.