Jennifer Pattison Tuohy, writing at The Verge:
Earlier this summer, on the day Artemis I was originally scheduled to launch, I spent an hour testing out the capabilities of this new deep space voice assistant down on the ground at Kennedy Space Center in Florida.
While this was a demo model (they wouldn’t let me in the spacecraft — I asked), as far as I could tell, it was an exact replica of the one on Orion, even down to the lack of an internet connection.
If you’re tired of reading bad news coming out of Twitter, don’t worry, this story is about SpaceX.
Yours truly, speaking with Texas Standard earlier today about the Artemis I launch:
After the end of the space shuttle program, we really were kind of stuck in terms of getting a crew to space from American soil. And SpaceX and others are working to supply missions to the International Space Station, but there hasn’t been anything really since Apollo to get us further out into space. And so the SLS rocket, this Artemis 1 mission, is the first big step to put boots back on the moon for the first time in 50 years.
At 1:47 Eastern time this morning, NASA’s $20+ billion rocket finally left its launch pad:
Launch starts about 3:16:54 into the video.
The SLS rocket and Orion crew capsule have their roots all the way back into the early 2000s, as NASA prepared for a post-shuttle world.1 It’s taken longer — and cost more — than expected, but now NASA has a vehicle capable of returning crew to the moon.
There are a lot of complex issues around this rocket, including the fact that SpaceX is well on its way to building its own vehicle in this class. There is an argument to be made that NASA should focus on science and exploration, and let companies like SpaceX and ULA manage all the launch vehicle hardware, but for today, I’m just glad to see this thing make it off the ground for the first time.
If you want to keep up with how the mission goes, be sure to check out NASA’s Artemis blog. It has its own RSS feed and everything.
NASA’s next Artemis 1 launch window is upon us. The SLS rocket is slated to launch November 16th, with the two-hour launch window opening at 1:04 AM Eastern. It’ll be streaming on NASA TV if you’re awake.
As Hurricane Nicole spun over Florida, NASA’s bajillion dollar SLS rocket sat atop Launch Complex-39B. Eric Berger:
Prior to Nicole’s arrival, NASA said its SLS rocket was designed to withstand wind gusts of 74.4 knots. Moreover, the agency stated on Tuesday in a blog post, “Current forecasts predict the greatest risks at the pad are high winds that are not expected to exceed the SLS design.”
From the publicly available data, however, it appears that the rocket was exposed to wind gusts near, at, or above 74.4 knots for several hours on Thursday morning. A peak gust of 87 knots was reported on the National Weather Service site, with multiple gusts above NASA’s design levels. It is possible that the 74.4-knot design limit has some margin built into it.
The time the space agency would have needed to begin rolling the rocket back to safety within the Vehicle Assembly Building, Nicole’s estimated winds were far below the safety margin. Time will tell if the choice to keep the rocket outside was a bad one, as Berger writes:
According to Phil Metzger, an engineer who worked on the space shuttle program for NASA, the most likely concern will be the structural integrity of the rocket after being exposed to prolonged periods of high winds. A rocket is designed to go upward, so although its structure can endure intense pressure and winds in a vertical direction, it is not designed to withstand similar winds in the horizontal direction.
In a series of tweets, Metzger predicted that it will be a busy couple of weeks for structural engineers to assess the risks of damage from the storm and potentially seek waivers to fly the vehicle after its exposure to these loads. This will be a difficult task. There is no ability to X-ray the structures inside the rocket, so this process will involve running, and re-running, structural calculations. At some point the program’s leadership will have to decide whether the risk—which includes the potential for the rocket to break apart during launch—is too high to fly without further inspections or remedial work.
Jim Free, NASA’s Associate Administrator for Exploration Systems Development, issued a statement on the issue, citing slower wind speeds than otherwise reported:
While wind sensors at the launch pad detected peak wind gusts up to 82 mph (71 knots) at the 60-foot level, this is within the rocket’s capability. We anticipate clearing the vehicle for those conditions shortly.
Our team is conducting initial visual check-outs of the rocket, spacecraft, and ground system equipment with the cameras at the launch pad. Camera inspections show very minor damage such as loose caulk and tears in weather coverings. The team will conduct additional onsite walk down inspections of the vehicle soon.
We took the decision to keep Orion and SLS at the launch pad very seriously, reviewing the data in front of us and making the best decision possible with high uncertainty in predicting the weather four days out. With the unexpected change to the forecast, returning to the Vehicle Assembly Building was deemed to be too risky in high winds, and the team decided the launch pad was the safest place for the rocket to weather the storm.
Nicholas Terry, Space Explored:
Early tomorrow morning, people around the globe will have the opportunity to view one of the most spectacular events in the sky, a total lunar eclipse. Here’s a rundown of how to watch this event and why total lunar eclipses are often referred to as “blood moons.”
If you can’t make it out, NASA will be streaming the event.
NASA is about to try to launch its Artemis 1 mission again. Here’s Stephen Clark at Spaceflight Now:
NASA scrubbed the first launch attempt for the Artemis 1 moon mission Aug. 29, when data indicated one of the rocket’s four hydrogen-fueled main engines was not being properly thermally conditioned during the countdown. Engineers later determined that the thermal measurements were from a bad sensor, and not indicative of a more serious problem.
A second launch attempt Sept. 3 was scrubbed by a hydrogen leak in the connection between the core stage of the rocket and its mobile launch platform. NASA replaced seals in the connection fully fueled the rocket in a tanking test Sept. 21 without any significant leaks, paving the way for launch opportunities in late September and early October.
But the threat from Hurricane Ian forced NASA officials to move the rocket back to the Vehicle Assembly Building for safety, delaying the next Artemis 1 launch attempt to Nov. 14. Unlike the mission’s previous countdowns, the next three Artemis 1 launch opportunities will be at night. Trajectory limitations and the position of the moon relative to Earth determine when the mission can launch.
The launch window on November 14 starts at 12:07 a.m. EST and will extend 69 minutes,1 with backup windows on November 16 and 19.
If the SLS continues to give NASA trouble and the rocket doesn’t get off the ground in these upcoming windows, things could get a lot more complicated, as Eric Berger reports at Ars:
On Thursday, NASA officials held a teleconference with space reporters and discussed the planned rollout of the Space Launch System rocket and Orion spacecraft early on Friday morning. The space agency remains on track for an Artemis I launch attempt on November 14, shortly after midnight, said Jim Free, who leads exploration systems development for NASA. This will be the third attempt to launch the SLS rocket on its debut flight. Free said the launch team is confident, but acknowledged there are “unknown unknowns” that may crop up during the countdown.
December deadline? … One of the big questions about the rocket concerns the lifetime of its massive solid rocket boosters, which have now been stacked for nearly two years. NASA’s Cliff Lanham, who oversees ground systems, said NASA’s initial analysis found that the rocket boosters provided by Northrop Grumman had a lifetime of one year. However, a subsequent analysis of their health cleared one through December 9, 2022, the other through December 14. NASA could probably extend their life further with additional analysis, Free adds. But this will be a source of concern if the Artemis I mission has to be delayed again.
Given how rocky this rocket’s development has been over the last decade, I’ll feel a lot better about things once it’s on its way to the moon.
That famous clip of a floppy disk floating through the air after being ejected from a Macintosh Portable really makes my brain vibrate in a special way. In this video, Scott Manley explains why the Portable was there in the first place:
Lucy is the first mission to explore the Jupiter Trojan asteroids, an ancient population of asteroid “fossils” that orbit around the Sun at the same distance as Jupiter. To reach these distant asteroids, the Lucy spacecraft’s trajectory includes three Earth gravity assists to boost it on its journey to these enigmatic asteroids.
On October 13, 2022, NASA’s Lucy spacecraft captured this image of the Earth and the Moon from a distance of 890,000 miles (1.4 million km). The image was taken as part of an instrument calibration sequence as the spacecraft approached Earth for its first of three Earth gravity assists. These Earth flybys provide Lucy with the speed required to reach the Trojan asteroids — small bodies that orbit the Sun at the same distance as Jupiter. On its 12 year journey, Lucy will fly by a record breaking number of asteroids and survey their diversity, looking for clues to better understand the formation of the solar system.
I really enjoyed this video about Endeavour’s final mission:
NASA is targeting the next launch attempt of the Artemis I mission for Monday, Nov. 14 with liftoff of the Space Launch System (SLS) rocket carrying the Orion spacecraft planned during a 69-minute launch window that opens at 12:07 a.m. EST. Artemis I is an uncrewed flight test to launch SLS and send Orion around the Moon and back to Earth to thoroughly test its system before flights with astronauts.
Inspections and analyses over the previous week have confirmed minimal work is required to prepare the rocket and spacecraft to roll out to Launch Pad 39B at Kennedy Space Center in Florida following the roll-back due to Hurricane Ian. Teams will perform standard maintenance to repair minor damage to the foam and cork on the thermal protection system and recharge or replace batteries on the rocket, several secondary payloads, and the flight termination system. The agency plans to roll the rocket back to the launch pad as early as Friday, Nov. 4.
Backup launch windows include: