Posted by JumpCrisscross 13 hours ago
https://www.npr.org/2026/08/28/nx-s1-5905370/nasa-nancy-grac...
P.S. I didn't post this at top level ... it was in response to a silly joke about the Romans which has since been flagged by dang ... apparently my comment was relocated to the top level but it's redundant here as this link was already given in the post (which I didn't see when I made this comment.)
parked in L2 a million miles away with 500mbps data transfer rate (1.5TB per DAY)
we've made it past DOGE destroying it
we've made it past him renaming it after himself and putting his mugshot on it
but Musk still needs to send it out of orbit without explosions, so here's hoping
(Falcon Heavy, don't tell me the odds)
* https://nextspaceflight.com/launches/details/6983/
* JWST vs Roman comparison https://svs.gsfc.nasa.gov/14942/
* https://www.wired.com/story/nasas-nancy-grace-roman-space-te...
* https://www.scientificamerican.com/article/nasas-roman-space...
* https://www.npr.org/2026/08/28/nx-s1-5905370/nasa-nancy-grac...
did not know and it's horrific Roman started as a billion dollar spy satellite sitting in a warehouse unused, but okay we got the crumbs from $20 Trillion in military spending I guess
oh and while the smallest planet Roman can image will be Jupiter-sized, Roman's successor would be able to image earth-like planets
except The Habitale Worlds Observatory Space Telescope HWO was scheduled for 2040 and now will not happen in my lifetime because DOGE got that one, Congress awarded it $150 Million and DOGE changed it to $5 Million
* https://science.nasa.gov/astrophysics/programs/habitable-wor...
* https://en.wikipedia.org/wiki/Habitable_Worlds_Observatory
06:25 AM Window Open
06:26 AM Window Close
Is it really just a 1 minute launch window? That seems incredibly tight. If there's any hitch in the countdown, that would pretty much mean a scrubbed launch. Not being well versed in orbital mechanics, why would the window be so short?
Falcon launches to the ISS typically have an instantaneous launch window (roughly, when the plane of the ISS's orbit sweeps over the launch site). If they miss it, they try again about a day later.
Falcon (both Heavy and its little sibling Falcon 9) uses subcooled densified propellants which limit how long it can sit waiting for launch while fueled before the LOX warms and expands too much.
A short window means they only have to compute and verify and program one trajectory.
You can get live countdowns and updates at https://www.spacex.com/launches which will link to first-party livestream coverage during the launch.
No need to go through third-party and advertising-laden dot-com sites.
The Falcon 9 and Falcon Heavy are intolerant to countdown holds late in the sequence. In particular, after propellant has been loaded, there must be no delay in launch. Any countdown holds will necessarily turn into a scrub for the day, as the propellant must be completely unloaded and the process restarted to prepare for launch. With the instantaneous window, it'll either be "go/no-go" at 07:26am EDT, or they'll go-around to another opportunity on Monday morning, around 07:22am.
The Falcon Heavy has made 12 launches and all of them have been successful. It's built using the same engines as the Falcon 9, which has become the boringly reliable workhorse of space launch, and the rocket cores are very similar in design. I'd bet on a successful launch, and probably on a successful landing of the side boosters.
(Do we really need to politicize launch vehicles, of all things?)
I was so excited for this. It was the one thing I really wanted to see happen in my own lifetime.
What a deeply moronic waste.
The NASA budget was $5M as a placeholder, but Noel Hinners cut it to zero to light a fire under the community, instead of a bogus pretend-its-still-happening number.
https://en.wikipedia.org/wiki/Hubble_Space_Telescope#Quest_f...
the illegal Iran War costs over $120 BILLION, has used over 1000 Tomahawks at $4 Million each (and 1250 patriot missiles)
a BILLION was stolen from nuclear missile maintenance fund for QatarForceOne
another BILLION was stolen for all the DC renovations so far that no-one asked for
billion diverted to his fake "peace board"
so there is money for war and drapes and gold statues but not science that benefits the world
hell he spends $2 MILLION EVERY WEEKEND for GOLF, first term and this term, half billion before he is gone
we could have had people on Mars for all that (not even a project I support but still would be worthy science)
"mbps" is a meaningless abbreviation. You need to consistently and correctly use capital letters when communicating technical terms. You cannot "e e cummings" your way into effective writing.
500 megabits per second works out to 5.4 terabytes per day. No idea where you get 1.5, unless you were thinking of 500Mb/hour!
60 × 60 × 24 × 500 × 1000000 ÷ 8
but 500 megabits per second to me is 500mbps?
ie. my cablemodem is 100mbps which is 100 megabits per second?
and that would [make Roman] 5.4 Terrabytes aka 5.4TB per day
but the transmitter is not at full speed full power 24/7
so it is 1.5TB per day in documentation that I do not have handy but vaguely remember
to repeat the more amazing part is that is from a MILLION MILES away, wow
(JWST "only" does 23mbps, 23 megabits per second)
Does it stop making sense when your calculations for the Roman telescope indicate slower speeds than your connection, which you say is 1/5th the speed?
Now, since the Roman telescope will be at an L2 point, signal acquisition will always be subject to the Earth's rotation. So there will be multiple ground stations involved across the globe.
https://en.wikipedia.org/wiki/NASA_Deep_Space_Network
If the quoted rate by NASA of 1.5 terabytes per day is accurate, then it will not be downlinking 24/7, but in bursts. 500Mbps is also the max, where the actual range will be 250-500. We'll need to account for RFI and packet loss, etc.