space

Breaking: Steven Hawking has died at age 76.

Breaking: Steven Hawking has died at age 76.

From the Guardian

Statement from the family

From the BBC

"I’m not afraid of death, but I’m in no hurry to die. I have so much I want to do first."

Stephen Hawking

It's a miracle that he even lived to 76, considering his condition. That's pretty close to an average lifespan -- very significant for someone with a disease that typically has a 5-year life expectancy.

To be fair, although this is horrible news, 76 is a great age for someone with as many medical conditions he had.

At least we probably won't have to read any more of his questionable pronouncements in response to weirdo questions about AI and whatever else that is out of his area of expertise.

Two massive discharge events (arcing) between the Mars-bound Tesla and the camera rig.

Two massive discharge events (arcing) between the Mars-bound Tesla and the camera rig.
Two massive discharge events (arcing) between the Mars-bound Tesla and the camera rig.
https://youtu.be/aBr2kKAHN6M?t=1h50m22s

Edit: ignore this. It's probably just the RCS thrusters...

I saw what I think were two massive discharge events (arcing) between the Tesla and the camera rig. The Tesla was traversing the Van Allen belts which is the worst case scenario for spacecraft charging, and parts of it is going in and out of shadow, making it even more prone to differential surface charging. The effect occurs when two surfaces have sufficiently large potential difference (typically thousands of Volts) that the discharge happens through the plasma.

You should see two nice broad multicoloured events there, roughly 10 seconds apart.

Given that it is in a vacuum, what would the arc be reflecting off to give that effect?

It seems more likely to me that it's just exhaust from the RCS thrusters being used to reorient it.

To be fair, I had several massive discharge events during the entire launch and landing sequence.

The center core is lost - it hit the water at 300mph, after some of its landing engines failed to fire

The center core is lost - it hit the water at 300mph, after some of its landing engines failed to...

Elon said in his post launch press conference that if any of the booster cores were to be destroyed he would prefer it be the center core. The side cores have the titanium grid fins which he wants to recover. The center core is based on an older design which does not have the updated grid fins.

Interesting tidbit, the rocket is initially aimed to miss the barge. It's only if and when it has slow down enough for a safe landing that it's trajectory gets corrected.

I can’t lie, I really want to see the footage of the booster hitting the water at 300 mph.

Shame it didn't also make it but this is still an incredible success. I look forward to future tests and seeing how they hammer out any problems that arise.

Would also be cool if we get to see the possible video of the crash, for science sake :-D

Falcon Heavy Megathread

Falcon Heavy Megathread

Put all your amazing FH demo flight stuff here! All articles, gifs, videos, stills, conversations, thoughts, all of it!

Anything FH related posted anywhere else will be removed.

I feel like I saw a slice of history when the two boosters touched down simultaneously.

Does anyone know if the core booster landed successfully?

I saw a car in space today. My life is complete.

gonna watch this on repeat forever.

@SpaceX: Falcon Heavy side cores have landed at SpaceX’s Landing Zones 1 and 2.

@SpaceX: Falcon Heavy side cores have landed at SpaceX’s Landing Zones 1 and 2.

This is fucking incredible. I mean absolutely incredible.

This could be the start of something huge for our species.

I cant believe they landed both at the same time. Just stunning engineering by the SpaceX Team

I was crying my eyes out while watching the two boosters land side by side. What a momentous occasion!

I can't wait for the day when this becomes mundane and commonplace! Bright times ahead~

Edit - the shot : official [x], and gif [x]

Watching the two land at the same time will be a moment ill never forget

Falcon Heavy liftoff!

Falcon Heavy liftoff!

This footage is going to be on a lot of documentaries.

This was an amazing moment in history. Watching the boosters land was also amazing.

That gif without sound gave me chills and made me a little teary eyed. Can’t wait to get home and watch all the footage, including the boosters landing.

Falcon Heavy Animation

Falcon Heavy Animation

If this goes off without a hitch, then:

1) Recovering three boosters in one go will be one of the most incredible space events to witness live, ever. Full stop. Keeping my fingers VERY crossed for this. I'm already salivating at the kinds of payloads we would be able to put into space for (relatively) cheap.

2) Every marketing dept for every single other car company in the entire world should just give up. Straight up liquidate. Because the footage that Tesla is going to get from the Roadster's dashboard will top anything else that another company attempts to do for a car commercial for at least half a decade lol.

We will either witness the greatest rocket explosion ever, or the most insane achievement ever. Props to SpaceX and their madman Elon.

People criticize Elon, they say he makes wild claims, they say he’ll never be able to accomplish half the stuff he says he will..... I think they’re just jealous that they can’t launch a sports car on a large rocket to mars with cool background music.

And even if he only accomplished half of what he set out to do in life, it’s more than most of us could do in a thousand lifetimes.

Any car advertisement: Driving down the Big Sur into the sunset.

Tesla: Hold my tank of liquid of oxygen. Floats off towards Mars with the Earth in its rear view mirror.

Galaxy cluster dubbed as “natural telescope” to peer father into the universe

Galaxy cluster dubbed as “natural telescope” to peer father into the universe
Galaxy cluster dubbed as “natural telescope” to peer father into the universe

It's amazing dad we can see father and father into the universe.

We can see so many sons!

I just wish the telescope was bigga and brotha.

Far is dad in Danish, but that's taking it too far, starts to resemble a dad joke.

Two 2001 images from NASA's Mars Global Surveyor orbiter show the dramatic change in the planet's appearance during that year's global dust storm.

Two 2001 images from NASA's Mars Global Surveyor orbiter show the dramatic change in the planet's appearance during that year's global dust storm.

Take a second to consider an entire planets worth of dust.

At first glance i thought this was a comparison showing the increase quality between shots.

Extremely tiny sharp pointed dust that wears out air seals.

Just ask Matt Damon how it was /s

The Moon is beautiful

Australian checking in, your animation is upside down :)
https://i.imgur.com/9CxKDDN.jpg

Australian checking in, your animation is upside down :)

What a lot of people don't know is that some of those craters on the moon's surface were not caused by meteor strikes. Many are simply just discoloration and blemishes that occur naturally with the aging process.

As someone from the Northern Hemisphere, I can't believe I've never thought of this before. Of course it would be upside down, but it's still kind of blowing my mind.

No kidding. I'm still dealing with the fact that Christmas in Australia happens in the summer.

Try one of these subthreads