Science Space Exploration megathread - Page 267

**DaFace** · 07:17 AM

Since a number of cool things are happening in space exploration these days, we'll widen the scope of this thread a smidge. Conversation about all things space exploration are welcome, whether it be from NASA, SpaceX, ULA, Blue Origin, or anyone else. Chances are most of the discussion will still be about SpaceX since they love to make things public and fun, but nothing's off limits. I'll eventually get around to modifying the OP to include resources for other companies too, but in the meantime, feel free to post any cool stuff you run across.

Lists of Upcoming Missions

Spoiler!

How to Watch a Live Launch

Spoiler!

Where to Learn More

Spoiler!

Glossary

Spoiler!

Space discussions tend to get a little bogged down in jargon, so here's a list of terms you might encounter. (Others, please let me know of others that should be added.)

ASDS - Autonomous Spaceport Droneship - The "barges" that they sometimes land rockets on.
Dragon - The cone-shaped capsule that sits at the top of the rocket for ISS-bound launches that holds the cargo (or, in the future, humans).
F9 - Falcon 9, the name of the rocket itself.
FH - Falcon Heavy, the three-booster version.
GTO - Geosynchronous Transfer Orbit, a type of orbit that will eventually result in the satellite orbiting the earth as it turns so that it seems to be in the same spot from the ground (such as DirecTV or Dish satellites). These types of launches are particularly challenging because they require a lot of power to get them into the right orbit, leaving very little fuel left for landing.
HIF - Horizontal Integration Facility - the building near the launch pad where they put all of the pieces of the rocket together before rolling it out to the pad.
ISS - The International Space Station
JRTI - Just Read The Instructions, the name of the "barge" that they land on for west-coast launches.
LEO - Low Earth Orbit, a fairly low orbit shared by many satellites and ISS. These launches usually require less power to achieve the proper orbit, so the first stage can often be landed back on land rather than on a drone ship.
LZ1 - Landing Zone 1, basically a big open slab of concrete at Cape Canaveral where the first stage will attempt to land (for some launches).
NET - No Earlier Than, basically the date they're hoping to launch, but rocket launches have a tendency of getting delayed.
OCISLY - Of Course I Still Love You, the name of the "barge" that they land on for east-coast launches.
RTLS - Return to Landing Site, a mission where the first stage comes back and lands at LZ1.
Starship - SpaceX's next-generation rocket (and spacecraft) that will hopefully one day take us to Mars. Starship is the "second stage" that will carry cargo or people, but also refers to the whole system. (It's confusing, but think of it like the Space Shuttle, which was both the shuttle itself and the entire launch system.)
Super Heavy - The giant booster that will carry Starship to space.

**Donger** · 02-02-2021, 02:32 PM

**Donger** · 02-02-2021, 02:32 PM

Bad relight on one engine?

RINGLEADER · 02-02-2021, 02:33 PM

I went to the stream late and saw a big explosion! What happened?

**DaFace** · 02-02-2021, 02:33 PM

Quote:

Originally Posted by Donger

Bad relight on one engine?

Looked like it to me. The SpaceX stream shows it pretty clearly.

MagicHef · 02-02-2021, 02:34 PM

**Donger** · 02-02-2021, 02:35 PM

Something flew off from inside

**DaFace** · 02-02-2021, 02:39 PM

Quote:

Originally Posted by RINGLEADER

I went to the stream late and saw a big explosion! What happened?

Looks like they're still struggling a bit with relighting after the big flip. That has to be some really weird forces at play with the internal fuel.

kepp · 02-02-2021, 02:47 PM

Quote:

Originally Posted by DaFace

Looks like they're still struggling a bit with relighting after the big flip. That has to be some really weird forces at play with the internal fuel.

At least one lit up right in the last few seconds. Not enough to avoid the crash.

**Donger** · 02-02-2021, 02:47 PM

Something definitely broke and flew off on re-light. That aside, maybe they should start the flip a little higher up? Altitude is life...

**Donger** · 02-02-2021, 02:54 PM

Yep. One of the Raptors let her down. Still it's just the final part. These things bellyflop return perfectly. pic.twitter.com/XdeeLWIsHt
— Chris B - NSF (@NASASpaceflight) February 2, 2021

**Donger** · 02-02-2021, 02:59 PM

Insprucker says that the plan was to relight two Raptors to flip then land on one?

Something flies off at 11:47

**Donger** · 02-02-2021, 03:21 PM

Lots of debris getting kicked out on the second engine relight during the kick flip. Going to go ahead and say that’s not exactly #norminal... but epic none the less �� #Starship #SN9 pic.twitter.com/ujD3Mr8bGF
— Everyday Astronaut (@Erdayastronaut) February 2, 2021

MagicHef · 02-02-2021, 03:43 PM

Quote:

Originally Posted by Donger

Insprucker says that the plan was to relight two Raptors to flip then land on one?

Something flies off at 11:47

Yep. My understanding is that two raptors flip the Starship, then one cuts out and the remaining one is used for landing. Because it couldn't flip fast enough on one engine, the landing thrust from the one that did work wasn't vertical enough to slow it properly.

**Donger** · 02-02-2021, 04:02 PM

Closeup of SN9’s landing (well kinda...)! ��
(Credit: @LabPadre) pic.twitter.com/Rf3JM0SA6D
— Everything SpaceX (@spacex360) February 2, 2021

**DaFace** · 02-02-2021, 09:37 PM

Whoa. I'm not staying up all night for it, but this is a cool milestone. Two launches a mile apart on the same day.

Now targeting two Falcon 9 launches of Starlink satellites*on Thursday, February 4, pending range acceptance and recovery weather conditions. First Falcon 9 launch*at 1:19 a.m. EST*from SLC-40, followed by another Falcon 9 launch*~4 hours later*at 5:36 a.m. EST*from LC-39A
— SpaceX (@SpaceX) February 3, 2021

06-01-2014, 09:40 AM
DaFace Kind of a mod Join Date: Aug 2005 Location: Donkey Land Casino cash: $156899	Space Exploration megathread Since a number of cool things are happening in space exploration these days, we'll widen the scope of this thread a smidge. Conversation about all things space exploration are welcome, whether it be from NASA, SpaceX, ULA, Blue Origin, or anyone else. Chances are most of the discussion will still be about SpaceX since they love to make things public and fun, but nothing's off limits. I'll eventually get around to modifying the OP to include resources for other companies too, but in the meantime, feel free to post any cool stuff you run across. Lists of Upcoming Missions Spoiler! General lists: https://nextspaceflight.com/ http://spaceflightnow.com/launch-schedule/ SpaceX specific list: https://spacexnow.com/upcoming.php How to Watch a Live Launch Spoiler! SpaceX: https://www.spacex.com/launches/ ULA: https://www.youtube.com/user/UnitedLaunchAlliance RocketLab: https://www.youtube.com/user/RocketLabNZ NASATV will also cover some launches (primarily ISS resupply missions): https://www.youtube.com/user/NASAtelevision Where to Learn More Spoiler! Some cool pics... https://www.flickr.com/photos/spacex/ https://www.instagram.com/spacex/?hl=en Twitter feed is usually interesing... https://twitter.com/SpaceX https://twitter.com/elonmusk The SpaceX sub is a great source of info... https://www.reddit.com/r/spacex https://www.reddit.com/r/spacex/wiki/index And for a more forum-style discussion board... http://forum.nasaspaceflight.com/index.php#c17 And there are plenty of YouTube channels with great content... Joe Scott - Lost of "future" discussion. Some about rockets and space. Much that goes beyond. Scott Manley - Super smart dude (engineer) who reviews a lot of major events in space exploration. Frazer Cain (Universe Today) - Podcast-style videos that go in-depth into space topics. Tim Dodd (Everyday Astronaut) - A "random dude" who got really into space (particularly SpaceX). He's a great resource for simple explanations of this stuff, as well as live hosting launches. USLaunchReport - Lost of videos of the more mundane stuff (e.g., booster recovery operations). Not a ton of commentary. NASASpaceFlight - Live hosting of most launches including a ton of video of Starlink operations. Glossary Spoiler! Space discussions tend to get a little bogged down in jargon, so here's a list of terms you might encounter. (Others, please let me know of others that should be added.) ASDS - Autonomous Spaceport Droneship - The "barges" that they sometimes land rockets on. Dragon - The cone-shaped capsule that sits at the top of the rocket for ISS-bound launches that holds the cargo (or, in the future, humans). F9 - Falcon 9, the name of the rocket itself. FH - Falcon Heavy, the three-booster version. GTO - Geosynchronous Transfer Orbit, a type of orbit that will eventually result in the satellite orbiting the earth as it turns so that it seems to be in the same spot from the ground (such as DirecTV or Dish satellites). These types of launches are particularly challenging because they require a lot of power to get them into the right orbit, leaving very little fuel left for landing. HIF - Horizontal Integration Facility - the building near the launch pad where they put all of the pieces of the rocket together before rolling it out to the pad. ISS - The International Space Station JRTI - Just Read The Instructions, the name of the "barge" that they land on for west-coast launches. LEO - Low Earth Orbit, a fairly low orbit shared by many satellites and ISS. These launches usually require less power to achieve the proper orbit, so the first stage can often be landed back on land rather than on a drone ship. LZ1 - Landing Zone 1, basically a big open slab of concrete at Cape Canaveral where the first stage will attempt to land (for some launches). NET - No Earlier Than, basically the date they're hoping to launch, but rocket launches have a tendency of getting delayed. OCISLY - Of Course I Still Love You, the name of the "barge" that they land on for east-coast launches. RTLS - Return to Landing Site, a mission where the first stage comes back and lands at LZ1. Starship - SpaceX's next-generation rocket (and spacecraft) that will hopefully one day take us to Mars. Starship is the "second stage" that will carry cargo or people, but also refers to the whole system. (It's confusing, but think of it like the Space Shuttle, which was both the shuttle itself and the entire launch system.) Super Heavy - The giant booster that will carry Starship to space. Last edited by DaFace; 10-13-2024 at 07:17 AM..
Posts: 52,518	1 0

02-02-2021, 02:32 PM	#3991
Donger "Think BOOM!" Join Date: Nov 2003 Location: 33.675° N 106.475° W Casino cash: $8599900 VARSITY	RUD __________________ I think the young people enjoy it when I "get down," verbally, don't you?
Posts: 186,998	1 0

02-02-2021, 02:32 PM	#3992
Donger "Think BOOM!" Join Date: Nov 2003 Location: 33.675° N 106.475° W Casino cash: $8599900 VARSITY	Bad relight on one engine? __________________ I think the young people enjoy it when I "get down," verbally, don't you?
Posts: 186,998

02-02-2021, 02:33 PM	#3993
RINGLEADER In Search of a Life Join Date: Dec 2001 Location: Confusion, USA Casino cash: $8490503	I went to the stream late and saw a big explosion! What happened?
Posts: 47,213

02-02-2021, 02:34 PM	#3995
MagicHef The Seated Villain Join Date: Apr 2007 Location: Seattle Casino cash: $1090247	Boom __________________ With a sack in 61% of his games, SB MVP Von Miller is the most consistent pass rusher in NFL history.
Posts: 10,711

02-02-2021, 02:35 PM	#3996
Donger "Think BOOM!" Join Date: Nov 2003 Location: 33.675° N 106.475° W Casino cash: $8599900 VARSITY	Something flew off from inside __________________ I think the young people enjoy it when I "get down," verbally, don't you?
Posts: 186,998

02-02-2021, 02:47 PM	#3999
Donger "Think BOOM!" Join Date: Nov 2003 Location: 33.675° N 106.475° W Casino cash: $8599900 VARSITY	Something definitely broke and flew off on re-light. That aside, maybe they should start the flip a little higher up? Altitude is life... __________________ I think the young people enjoy it when I "get down," verbally, don't you?
Posts: 186,998

02-02-2021, 02:54 PM	#4000
Donger "Think BOOM!" Join Date: Nov 2003 Location: 33.675° N 106.475° W Casino cash: $8599900 VARSITY	Yep. One of the Raptors let her down. Still it's just the final part. These things bellyflop return perfectly. pic.twitter.com/XdeeLWIsHt — Chris B - NSF (@NASASpaceflight) February 2, 2021 __________________ I think the young people enjoy it when I "get down," verbally, don't you?
Posts: 186,998

02-02-2021, 02:59 PM	#4001
Donger "Think BOOM!" Join Date: Nov 2003 Location: 33.675° N 106.475° W Casino cash: $8599900 VARSITY	Insprucker says that the plan was to relight two Raptors to flip then land on one? Something flies off at 11:47 __________________ I think the young people enjoy it when I "get down," verbally, don't you?
Posts: 186,998

02-02-2021, 03:21 PM	#4002
Donger "Think BOOM!" Join Date: Nov 2003 Location: 33.675° N 106.475° W Casino cash: $8599900 VARSITY	Lots of debris getting kicked out on the second engine relight during the kick flip. Going to go ahead and say that’s not exactly #norminal... but epic none the less �� #Starship #SN9 pic.twitter.com/ujD3Mr8bGF — Everyday Astronaut (@Erdayastronaut) February 2, 2021 __________________ I think the young people enjoy it when I "get down," verbally, don't you?
Posts: 186,998

02-02-2021, 04:02 PM	#4004
Donger "Think BOOM!" Join Date: Nov 2003 Location: 33.675° N 106.475° W Casino cash: $8599900 VARSITY	Closeup of SN9’s landing (well kinda...)! �� (Credit: @LabPadre) pic.twitter.com/Rf3JM0SA6D — Everything SpaceX (@spacex360) February 2, 2021 __________________ I think the young people enjoy it when I "get down," verbally, don't you?
Posts: 186,998

02-02-2021, 09:37 PM	#4005
DaFace Kind of a mod Join Date: Aug 2005 Location: Donkey Land Casino cash: $156899	Whoa. I'm not staying up all night for it, but this is a cool milestone. Two launches a mile apart on the same day. Now targeting two Falcon 9 launches of Starlink satelliteson Thursday, February 4, pending range acceptance and recovery weather conditions. First Falcon 9 launchat 1:19 a.m. ESTfrom SLC-40, followed by another Falcon 9 launch~4 hours laterat 5:36 a.m. ESTfrom LC-39A — SpaceX (@SpaceX) February 3, 2021
Posts: 52,518