They're relatively certain there is water under the surface of Mars. They're cautiously optimistic there is water ON the surface of Mars, although some scientists call it "avalanches of sand".

https://www.popularmechanics.com/spa...id-water-mars/

Four days to get it back horizontal, back to the assembly building, get the cargo fitted, and back out to the pad?

Wow.

Eh, I bet it doesn't take that much to throw the payload and fairing on top. It's almost certainly been attached a number of times already, so they know it fits.

This is NOT that - it's from before the static fire - but is kind of cool to see them attaching everything together.

<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Booster mate inside SpaceX&#39;s hangar at LC-39A ahead of Falcon Heavy’s static fire yesterday <a href="https://t.co/G7ZPhOBkyj">pic.twitter.com/G7ZPhOBkyj</a></p>&mdash; SpaceX (@SpaceX) <a href="https://twitter.com/SpaceX/status/1114611309180411905?ref_src=twsrc%5Etfw">April 6, 2019</a></blockquote>
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Probably a repost, but I don't care:

<iframe width="560" height="315" src="https://www.youtube.com/embed/VBlIvghQTlI" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

“Launch Reschedule Notification: SpaceX Falcon Heavy has been rescheduled to Wednesday, April 10th 2019. Launch window opens at 6:36 p.m.”

SpaceX officials did not return requests for confirmation Monday morning.

The highly anticipated launch, which is expected to draw 100,000 or more spectators to the region, will carry Saudi Arabia’s Arabsat-6A satellite into space.

The U.S. Air Force Weather Squadron’s forecast, released this weekend, had placed the probability of a successful Tuesday launch at 30 percent because of weather.

The probability of favorable weather on Wednesday was 80 percent.

This will be the first flight of the vehicle with three new Block 5 boosters.

Everything SEEMS to be on track for Falcon Heavy tomorrow! Window opens at 6:35pm EST and closes about 2 hours later. Here's hoping it goes off on time because I have a conflict starting at about 7pm EST!

Dat ass......

https://i.imgur.com/vUQwKhq.jpg

Space Exploration megathread
 

Black Hole captured via satellite. Amazing!!!

https://uploads.tapatalk-cdn.com/201...f3208d99f5.jpg

https://www.sciencenews.org/article/...aign=r_science

<blockquote class="twitter-tweet" data-conversation="none" data-lang="en"><p lang="en" dir="ltr">First flight for Falcon Heavy Block 5 means there is some risk of failure between 5% to 10% imo. Many good design improvements from Falcon Heavy demo, but the changes are unproven.</p>&mdash; Elon Musk (@elonmusk) <a href="https://twitter.com/elonmusk/status/1115998728878321672?ref_src=twsrc%5Etfw">April 10, 2019</a></blockquote>
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GAAAHHHH...goddammit. I'm not going to be able to watch live.

<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Falcon Heavy and Arabsat-6A are vertical on Launch Complex 39A. Currently targeting liftoff at 8:00 p.m. EDT; monitoring upper-level winds that could push us to the end of the window (8:32 p.m. EDT) → <a href="https://t.co/gtC39uBC7z">https://t.co/gtC39uBC7z</a> <a href="https://t.co/Vbzbhy6PLz">pic.twitter.com/Vbzbhy6PLz</a></p>&mdash; SpaceX (@SpaceX) <a href="https://twitter.com/SpaceX/status/1116057892140998656?ref_src=twsrc%5Etfw">April 10, 2019</a></blockquote>
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Sunset is 7:42pm EDT. Should be epic!

Going to apollo 11 for the fifth time tonite. Last day it’s in the theaters (AMC anyway). Feel sorry for any of you who missed this on the big screen

Five times? That's a bit much even for me. :)

But yeah, it's worth the watch. Really cool to see it all unfold sequentially.

Looks like they're pushing all the way to the end of the window.

<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">New T-0 of 8:32 p.m. EDT due to upper-level winds. Vehicle and payload still look good for launch.</p>&mdash; SpaceX (@SpaceX) <a href="https://twitter.com/SpaceX/status/1116108354001051648?ref_src=twsrc%5Etfw">April 10, 2019</a></blockquote>
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That'll make it basically an instantaneous window at that point, so we'll see if they get it off. Unfortunately I won't be able to catch up until late tonight, so I hope you guys get to enjoy the show.