John Berrigan
@jabe8
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space nut, retired physics teacher but always a teacher, critical thinker, Educational Software developer, Tesla Model 3 & BoltEV owner (and loving it!!)
oakville, Ontario, Canada
Joined June 2008
With @RocketLab doing the launch to the Moon, decided to do a thread on some basic rocket/orbit theory..thread..
Did a "pd" session for science teachers a while ago about rockets. here is the handout..there is some simple theory and questions involving the math of rocket thrust if so inclined..answers at the end to see how you did. :)
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Getting there..great news..
Our #GhostRiders nailed our most challenging burn to date! The team completed a 4-minute Lunar Orbit Insertion with Blue Ghost's RCS thrusters and main engine to enter an elliptical orbit around the Moon. Over the next 16 days, we'll conduct additional maneuvers to circularize our orbit and get closer to the lunar surface! #BGM1
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@nikolatrevor Sigh..just sue them, take them to court to get money rather than twitter/Instagram where your claims can't be properly countered .in court no one can lie..
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RT @KenKirtland17: Geez. To put that in perspective, that’s about 2X the peak amount of people Boeing had working on their SLS contracts……
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Wow
🚨#BREAKING Blue Origin employees brace for major layoffs; as all-hands meeting called with CEO Dave Limp for this morning. While the precise number of layoffs remains uncertain, sources indicate that the company is expected to shed up to 2000 positions with another 500-1000 for performance review stuff....
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RT @stoke_space: Introducing Andromeda: Our next-generation rapidly reusable upper stage engine. With an integrated metal heat shield—and n…
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RT @Firefly_Space: P.S., can you spy the Moon in these photos taken just after our Trans Lunar Injection? #BGM1
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So.. early summer?
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Starship is spurring some cool ideas.. as starship is shown to do things as expected funding will ramp..early investors will benefit
PDR Success! Gravitics completed the design review (PDR) for our first commercial module. This is an important milestone that validates our spacecraft design. Concurrent with the PDR, Gravitics showcased substantial build progress, including a flight-like dome prototype and tooling for module construction
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Snooker gods saying.."ummm..nope..you aren't winning the decider " :)
"Of all the places, in all the world..." 🌍 Kyren Wilson found himself in a VERY sticky situation earlier! #WelshOpen | @BetVictor
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Gotta love orbital mechanics
The RESILIENCE lander is currently approx. 460,000 km from Earth—farther than the Moon—as it continues on its journey! Last week, our Operations engineers successfully executed the critical maneuver that set RESILIENCE on its path for lunar flyby, expected to take place on Feb. 14 (UTC). Flyby will be the point in which the lander is making its closest pass to the Moon before entering lunar orbit later in the mission, and tonight’s Full Moon has us imagining what RESILIENCE will see as it approaches! Today RESILIENCE is at the “apogee”, meaning the distance from the body it is orbiting—Earth—is at its maximum and the velocity (760 km/h) is at the minimum. From this point on, the lander will start being pulled again towards the Earth. But this time, unlike its previous orbits around Earth, the Moon will pass by so closely that it will alter its trajectory into the 2nd orbital phase of the mission, the low energy transfer. And that is the lunar flyby! #ispace #HAKUTO_R #VentureMoon #RESILIENCE #M2Updates
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@Robotbeat @GregWAutry @SciGuySpace Setting achievable goalposts will help..get rid of distractions..financial..*cough* sls*cough* other resources
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@Robotbeat @SciGuySpace I think beating Chinese is the outward view but internally I bet they are competing against each other :)
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@SciGuySpace @Robotbeat If starship gets on lunar surface at around same time gloves may be off between the 2 companies
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This would be cool..
Limp: "very confident" we can get Blue Moon Mk 1 lander on the Moon this year.
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