One hundred years ago, Roald Amundsen reached the North Pole in the airship Norge. Just days before, Byrd had claimed to reach the pole by airplane. Their technological race to the pole redefined what it meant to be a "heroic" explorer. daily.jstor.org/arctic-airsh... #histSTM #otd 🗃️ #aviation

Apollo-era scientists wanted astronauts to cover as much ground at their landing sites as possible. To some, Lunar Flying Units seemed an ideal solution. spaceflighthistory.blogspot.com/2015/07/rock...

JCB TARGETS NEW LAND SPEED RECORD USING ITS OWN HYDROGEN ENGINES rcnunitedkingdom.blogspot.com/2026/05/jcb-...

Japan Is Building a $13,000,000,000 Hydrogen Energy Infrastructure to Escape the Strait of Hormuz Oil Crisis — Kawasaki Just Launched a 30% Hydrogen Engine https://www.europesays.com/japan/21244/ Kawasaki Heavy Industries has begun commercial sales of the world’s first large gas engine that can …

The new hydrogen engine, while still in development, has thermal efficiencies above 60 percent. In comparison, diesel engines sit at around 50 percent.

The team that 20 years ago set the diesel land speed record of over 300 mph later this year is going after the hydrogen record. www.autocar.co.uk/car-news/new...

@nasaspaceflight.com @jackiewattles.bsky.social @lorengrush.bsky.social @genejm1017.bsky.social @dsfpspacefl1ght.bsky.social Grid fins and the same hot staging ring design as Super Heavy V.3 were used on the Soviet N-1 moon rocket back in the sixties. SpaceX doesn't invent new technology.

DC-X was supposed to lead to a larger prototype, DC-Y, that would perform suborbital and eventually orbital flights. thespacereview.com/article/1196/1

"The relationship between speed and orbit is an inverse one defined by gravity: the closer an object is to the body it orbits, the faster it must travel to maintain that orbit. The orbital velocity for a circular orbit at an altitude of 100 miles (approximately 161 km) is 17,478 miles per hour."

Sometimes I envy this astronaut. Imagine how much reading he could get done (when he wasn't struggling to survive). spaceflighthistory.blogspot.com/2015/07/the-...

@antidr.bsky.social @nasaspaceflight.com @lorengrush.bsky.social @jackiewattles.bsky.social @newgen7267.bsky.social @maxtwang.bsky.social www.youtube.com/watch?v=6a95...

@dom-o.bsky.social @jackiewattles.bsky.social @newgen7267.bsky.social @nasaspaceflight.com @antidr.bsky.social @lorengrush.bsky.social @dsfpspacefl1ght.bsky.social $15 billion spent to date on Starship. www.youtube.com/watch?v=-_pS...

@dom-o.bsky.social @genejm1017.bsky.social @jackiewattles.bsky.social @lorengrush.bsky.social I can see why SpaceX went to the gas generator system to pressurize their water deluge system. No water towers required and no big compressed air tanks needed. www.youtube.com/watch?v=sE5B...

AI is not reasoning or analytical. www.youtube.com/watch?v=pd1K...

@nasaspaceflight.com @jackiewattles.bsky.social @lorengrush.bsky.social @antidr.bsky.social @dsfpspacefl1ght.bsky.social @genejm1017.bsky.social @dom-o.bsky.social NO, the external tank DIDN'T use manually welded stringers for the LOX/LH2 tanks. It had a machined isogrid.

@jackiewattles.bsky.social @lorengrush.bsky.social @dom-o.bsky.social @dsfpspacefl1ght.bsky.social @antidr.bsky.social @nasaspaceflight.com NO, the external tank DIDN'T use manually welded stringers for the LOX/LH2 tanks. It had a machined isogrid. www.youtube.com/watch?v=0NVt...

@jackiewattles.bsky.social @lorengrush.bsky.social @antidr.bsky.social @mentges.bsky.social @dom-o.bsky.social @maxtwang.bsky.social @newgen7267.bsky.social @nasaspaceflight.com @genejm1017.bsky.social @dsfpspacefl1ght.bsky.social www.youtube.com/watch?v=jlvS...

Based on 2025 launch data, SpaceX conducted approximately 42 non-Starlink orbital launches. While the company achieved a record total of 165 to 170 orbital launches, the vast majority were for their own internet constellation, with roughly 123-130+ launches dedicated to Starlink.

@jackiewattles.bsky.social @lorengrush.bsky.social @genejm1017.bsky.social An orbital velocity of 16,800 mph corresponds to an altitude of approximately 432 miles above the Earth's surface. At the altitudes flown to date by the Starship orbiter orbital velocity is approximately 18,000 mph.

An orbital velocity of 16,800 mph corresponds to an altitude of approximately 432 miles above the Earth's surface. At the altitudes flown to date by the Starship orbiter orbital velocity is approximately 18,000 mph.