This is the official r/space megathread for the launch of the James Webb Space Telescope, you're encouraged to direct posts about the mission to this thread, although if it's important breaking news it's fine to post on the main subreddit if others haven't already.
Happy holidays everyone! After years of delays, I can't believe we're finally here. Today, the joint NASA-ESA James Webb Space Telescope (J.W.S.T) will launch on an Ariane-5 rocket from Kourou, French Guiana at 7:20 EST / 12:20 UTC. For those that don't know, this may be the most important rocket launch this century so far. The telescope it'll carry into space is no ordinary telescope - Webb is a $10 billion behemoth, with a 6.5m wide primary mirror (compared to Hubble's 2.4m). Unlike Hubble, though, Webb is designed to study the universe in infrared light. And instead of going to low Earth orbit, Webb's being sent to L2 which is a point in space several times further away than the Moon is from Earth, all to shield the telescope's sensitive optics from the heat of the Sun, Moon and Earth.
What will Webb find? Some key science goals are:
Image the very first stars and galaxies in the universe
Study the atmospheres of planets around other stars, looking for gases that may suggest the presence of life
Provide further insights into the nature of dark matter and dark energy
However, like any good scientific experiment, we don't really know what we might find!
Q: When is the launch time?
A: Today, at 7:20 am EST / 12:20 UTC, see above links to convert into your timezone. The weather at Kourou looks a little iffy so there is a chance today's launch gets postponed until tomorrow morning due to unacceptably bad weather.
Q: How long until the telescope is 'safe'?
A: 29 days! Even assuming today's launch goes perfectly, that only marks the beginning of a nail-biting month-long deployment sequence, where the telescope gradually unfurls in a complicated sequence that must be executed perfectly or the telescope is a failure... and even after that, there is a ~6 month long commissioning period before the telescope is ready to start science. So it will be many months before we get our first pictures from Webb.
Timeline of early, key events (put together on Jonathan McDowell's website )
L+27 minutes: JWST seperates from Ariane-5
L+33 minutes: JWST solar panel deployment
L+12.5 hours: JWST MCC-1a engine manoeuvre
L+1 day: JWST communications antennae deploy
I've always been self conscious about how I look in pictures, but as I get older and people move or pass away, I wish I had taken/been in more group/family photos. It's easy to take time for granted. Take advantage of photo opportunities while you can.
Edit: This advice was never meant to focus exclusively on family. No one should ever feel encouraged to immortalize time spent in an unhealthy situation or environment. I worded this advice broadly because I hope that those who experience difficult family dynamics can enjoy valuable connections elsewhere with whomever they call loved ones.
A lot of newer vehicles have a feature where the engine shuts off when you come to complete stop, kind of like a golf cart. This feature was designed to save fuel apparently.
Has anyone tried to cross a fast moving intersection with this feature, it is horrible. It’s like driving with lag, and downright dangerous.
Not to mention most of these damn vehicles turn it on by default, some not even allowing you to turn it off unless you buy some aftermarket kit. In my truck my routine is to hop in start it up and flick the auto stop button off. I have to do this everytime the vehicle is started, there is no toggle, no way to default it to off.
Tldr: engine shut off is a shitty and dangerous option that doesn’t save shit for gas anyhow.
This site only for you and only just for fun. For you, who love fun and laughter.
About site content
Site content is 18+. Site content is not unique and is a compilation of information from different resources. There is no moderation when adding content.
The creator of the site, neither as e wants to hurt the feelings of believers, sexual minorities and other groups of users. If all the same you felt hurt, I'm sorry.