The Pod Bay

I was going to do this the other day with two videos of the Antares explosion this week. The question regarded analysis of the video so it would have been relevant. It occurs to me that animations of trajectories and orbits could be useful in some answers. Cases dealing with airflow, dynamic lo...

TildalWave

well it was said that the penumbral phase of the eclipse starts at 00:11:47 UTC but I can already see some dimming of the NW part of it

kim holder

the feature was added. going outside now...

TildalWave

@kimholder if I click on your links, I get 404

OK I'll try to fix it, give me a sec

kim holder

1:11 AM

The Overview Effect

►

hm, do i have to put it in the youtu.be format?

TildalWave

well, dunno which all it will parse, but it can't parse a 404 page ;)

links simply didn't work, not sure where you copied them from

youtube.com/CHMIfOecrlo?t=4m30s

kim holder

i have to change them, if i take them from the little embed tool they have, they don't work

TildalWave

^ the first one you used

@kimholder ah no, just copy from the page URL

kim holder

yeah, but that doesn't have the time in it

TildalWave

or right-click, "copy video URL at current time", then just replace # for & and add s at the end

so e.g. https://www.youtube.com/watch?feature=player_detailpage&v=CHMIfOecrlo#t=811 would be https://www.youtube.com/watch?feature=player_detailpage&v=CHMIfOecrlo&t=811s

and you can lose that feature=player_detailpage part not even sure why they still carry that parameter

I don't think it hurts to leave it tho

kim holder

1:16 AM

ah, yes yes.... we've had this conversation before

but i forgot that part

i should add that to my meta question

TildalWave

or I to my answer, but I kinda always forget to because I thought it might be worth posting all those instructions and our requirements in a separate thread

kim holder

yeah, i agree. i've never figured out where it would be truly visible. the question is at least at the top, so it's a little more visible

kim holder

1:32 AM

@TildalWave hey, you might want to edit Edgar Mitchell out of your comment, he is already on the list in the question :P

TildalWave

OK showing that shadow cast on the Earth as seen from the ISS was a bit lame on NASA's part, that was of course from solar eclipse, NOT from lunar eclipse when the Earth casts a shadow on the Moon (the Moon doesn't cast a shadow on the Earth during lunar eclipse, that's solar eclipse)

kim holder

no eclipse for me, overcast

TildalWave

@kimholder I just copied from Wiki :P

Undo

wow, sounds like @DavidFreitag is having a rough time of it :P

TildalWave

@kimholder pretty OK here so far by some strange voodoo that cleared the skies after a week of overcast

David Freitag

1:34 AM

@Undo Heh, actually i should get the cast off this week

TildalWave

@DavidFreitag yeah but you might wanna avoid strong magnets for a while longer :P

David Freitag

@TildalWave Oh, I was wrong, it's a titanium pin, not steel.

TildalWave

held in place by titanium wire?

David Freitag

Titanium fuses with the bone

Undo

Is that... good?

David Freitag

1:40 AM

@Undo Titanium is non-ferrous which means I don't need to fear the MRI

Undo

ah

David Freitag

Also, titanium fuses to bone naturally, so you don't need to artificially hold it in place until it heals

Undo

oh, interesting

David Freitag

2:01 AM

Woo full lunar eclipse

Undo

2:30 AM

Shiny red moon

David Freitag

All I see is a giant brown marble

TildalWave

yeah I tried to take some shots but while the atmosphere looks clear to the naked eye apparently the cam doesn't agree

I still got better than what Griffith does now

David Freitag

You have better hardware than an observatory?

TildalWave

just slightly better conditions I guess

too much sensor noise tho, and if I decrease sensitivity, I get motion blur with shutter open about 5-7 seconds

David Freitag

2:45 AM

It's much darker here

TildalWave

@DavidFreitag that's several seconds long exposures

that's why it moves

TildalWave

3:03 AM

OK Griffith is slowly doing better quality feed than I managed, should get a bit better still as it gets higher above the horizon

TildalWave

4:14 AM

Launch of ISRO's PSLV-XL deploying Astrosat observatory and 6 maritime micro/nano-satellites is now webcast live. More info here

T-7 min.

T-3 min.

T-30 s

liftoff

there you go, not a very good source quality I'm afraid

wroom wroom 2 km/s in a bit over 100 seconds

XKCD

7:50 AM

Why are we spending billions to ruin Mars with swarms of robots when Elon Musk has promised to ruin Mars for a FRACTION of the cost?

TildalWave

2:49 PM

Sep 25 at 11:07, by TildalWave

^ (on 28th, NASA to Announce Major Science Finding From Mars Exploration, more info: https://www.nasa.gov/press-release/nasa-to-announce-mars-mystery-solved, will be webcast on NASA TV: https://www.nasa.gov/multimedia/nasatv/)

there, you're all setup ^ I know what's it all about anyway so I'm off for some of this lovely sun outside :P

kim holder

@TildalWave oh sure, enjoy the sun mr. special inside knowledge.

PearsonArtPhoto

I have several people on my facebook page that could probably answer the question for me, but they won't.

I have a pretty good idea since Alfred McEwen is invited, knowing somewhat of his thoughts on Mars Exploration.

And the rumor that it has something to do with water. But my back door unfortunately isn't working anymore to the HiRISE site, so...

b_jonas

We might find out very soon; or else only during the press announcement that starts in 30 minutes.

kim holder

3:11 PM

@PearsonArtPhoto hey yeah, i would have thought you'd be the guy with the inside dope first.

well, i can wait

PearsonArtPhoto

I could probably figure something out still, but I'd have to do things the really hard way, and I'm just lazy that way...

Alfred and most of the HiRISE scientists are in the "Mars never had much water" camp.

The biggest mystery surrounding Mars is where is the water now, if there seems to be evidence of there being much water everywhere.

So if it's not seeing gullies with water in them, then I speculate they've found some evidence as to why there is so little water on Mars today.

kim holder

i know very little about either thing. i'd like to say something insightful but can't really.

nasa tv is just black for me. think i'll have to go look at their youtube channel

ustream.tv/NASAHDTV

that didn't work either, fallback to ustream

PearsonArtPhoto

3:28 PM

52K viewers. That's really high...

This might just be the most people I've seen watch a NASA event online...

kim holder

lots of things people would like to know about mars, its really been on the public mind lately

PearsonArtPhoto

discovery.com/dscovrd/space/…

It's nice they timed the discovery with the release of The Martian.

The same week, at least...

70k now on Ustream... I'm thinking this might just choke Ustream...

kim holder

i'm not getting anything now

80k

PearsonArtPhoto

Read the article I just posted, basically they found more evidence that water is flowing from the gullies.

kim holder

ha - just couldn't wait until after the presser, could they? :D

PearsonArtPhoto

3:34 PM

Well, embargos are typically lifted right at the time the press release starts.

kim holder

so water flows on the martian surface sometimes. that is pretty cool.

PearsonArtPhoto

Like so many discoveries like this, this has already been reported, they just found a bit more evidence to support it.

kim holder

yeah, i'd heard it a bit. i did have the impression it was quite uncertain still.

b_jonas

um, and what's the new evidence?

PearsonArtPhoto

They found that there are hydrated salts on the surface in these gullies, I assume.

kim holder

3:40 PM

the broadcast worked long enough to hear someone say liquid water has been found on mars

b_jonas

I hope they'll just put up an article later

nasa.gov/press-release/…

"NASA Confirms Evidence That Liquid Water Flows on Today’s Mars" article on NASA homepage

"Using an imaging spectrometer on MRO, researchers detected signatures of hydrated minerals on slopes where mysterious streaks are seen on the Red Planet. ... These downhill flows, known as recurring slope lineae (RSL), often have been described as possibly related to liquid water. The new findings of hydrated salts on the slopes point to what that relationship may be to these dark features. ...

Scientists say it’s likely a shallow subsurface flow, with enough water wicking to the surface to explain the darkening."

PearsonArtPhoto

What usually happens with this kind of thing is the scientists publish an article. The editors of the journal agree to publish it, but with the understanding that the team who is writing the article (Or anyone) can't discuss the results publicly until after the embargo is released.

SaintWacko

I have the broadcast working on the mobile app

PearsonArtPhoto

The embargo is released at the moment the press conference starts.

SaintWacko

Couldn't get it to start on my computers, though

PearsonArtPhoto

3:47 PM

They typically will interview with a few trusted news outlets before for a major release, giving them the same terms as the embargo (Don't release publicly until XX time.)

kim holder

yeah, ustream has been working for me for a few minutes

oh, more perchlorates. poison water.

b_jonas

@PearsonArtPhoto There is a scientific journal article, yes, because the article I linked to says "Nature Geoscience paper"

PearsonArtPhoto

They mentioned it at the start of the press release.

I love how the person speaking now is a "Ph.D candidate"

I'm sure this will help him to get his degree.

kim holder

he's giving a pretty good presentation

b_jonas

Are they doing questions from the journalists yet?

PearsonArtPhoto

4:02 PM

Yes, about 15 minutes on one question...

b_jonas

nasa.gov/image-feature/jpl/pia19918/… "Recurring "Lineae" on Slopes at Horowitz Crater"

and a third one

nasa.gov/image-feature/jpl/pia19917/… "Dark, Recurring Streaks on Walls of Garni Crater"

TildalWave

@kimholder :P I didn't know either, then missus insisted we go out, so I asked someone that knew :)

PearsonArtPhoto

I'm waiting for a reference to the book/movie The Martian.

They've hit 2 interesting topics that came up in the book...

kim holder

4:18 PM

i wouldn't blame them one bit for timing this to ride the heightened interest in mars

Feeds

TildalWave has added an event to this room's schedule.

TildalWave

^ (on 29/30th, The Space Show w/ Ms. Ally Abrams, new SFF Communications Officer, live podcast: thespaceshow.com/live.htm, more info: thespaceshow.com/newsletterfinal.htm)

and that's kinda it for this week, tonight is a "meta show" with open lines about new website progress and so on, and the upcoming couple of weeks there won't be any shows due to Dr. Livingston's medical leave

kim holder

oh? i didn't know that.

i hope it isn't too serious.

TildalWave

@kimholder dunno, I hope too... I guess he'll mention it tonight starting at 7 pm PDT but I usually don't schedule these shows without any guests or directly space exploration related agenda here

kim holder

gee, i haven't listened to one in ages - my inability to multitask. i'll catch up later on it.

TildalWave

4:32 PM

ooo pretty picture

Sep 25 at 15:26, by Stack Exchange

NASA Image of the Day: The Nile at Night

posted on September 25, 2015

NASA astronaut Scott Kelly, recently past the halfway mark of his one-year mission to the International Space Station, photographed the Nile River during a nighttime flyover on Sept. 22, 2015. Kelly (@StationCDRKelly) wrote, "Day 179. The #Nile at night is a beautiful sight for these sore eyes. Good night from @space_station! #YearInSpace."

Feeds

TildalWave has added an event to this room's schedule.

TildalWave

^ (on 1st, ISS Progress 61 Launch Coverage, on NASA TV nasa.gov/multimedia/nasatv)

Feeds

4:51 PM

TildalWave has added an event to this room's schedule.

TildalWave has removed an event from this room's schedule.

TildalWave

just moved for a day, I messed up the dates

Feeds

5:43 PM

TildalWave has added an event to this room's schedule.

TildalWave

^ (on 2nd, Launch of ULA Atlas V 421 deploying Morelos 3 (Mexsat 2) communications satellite, more info: ulalaunch.com/…, webcast at: ulalaunch.com/webcast.aspx)

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TildalWave

^ (on 29/30th, Smithsonian Air & Space John H. Glenn Lecture Series: Looking at Earth: An Astronaut's Journey, airandspace.si.edu/events/detail.cfm?id=17802)

Stack Exchange

NASA Image of the Day: Supermoon Eclipse in New York City

posted on September 28, 2015

A perigee full moon, or supermoon, is seen next to the Empire State Building at the beginning of a total lunar eclipse, Sunday, Sept. 27, 2015 in New York City. The combination of a supermoon and total lunar eclipse last occurred in 1982 and will not happen again until 2033.

NASA Image of the Day: Supermoon Eclipse in Washington

posted on September 28, 2015

A perigee full moon, or supermoon, is seen behind the Washington Monument during a total lunar eclipse on Sunday, September 27, 2015, in Washington, DC. The combination of a supermoon and total lunar eclipse last occurred in 1982 and will not happen again until 2033.

TildalWave has added an event to this room's schedule.

TildalWave

^ (on 8th, SVAstronomy Lecture: In the Land of Enchantment: A Decade Exploring Saturn w/ Dr. Carolyn Porco, foothill.edu/news/newsfmt.php?sr=2&rec_id=3852, webcast at youtube.com/user/SVAstronomyLectures)

Stack Exchange

6:15 PM

NASASpaceFlight.com: HTV-5 departs ISS – following slight glitch – ahead of fiery demise

posted on September 28, 2015 by Chris Bergin

Japan’s HTV-5 cargo vehicle has departed the International Space Station (ISS) on Monday ahead of a fiery plunge back to Earth. The spacecraft – which initially suffered from... Related posts: HTV-4 departs following successful ISS resupply mission European duo heading for fiery farewells Falcon 9 v1.1 conducts Static Fire ahead of CRS-4 launch

TildalWave

Some OT events you might find interesting: SLAC's Now Playing: Molecular Movies w/ Mike Minitti on Sep. 29 at 7:30 PM PST, and Perimeter Institute's The Astonishing Simplicity of Everything w/ Neil Turok on Oct. 7 at 7:00 PM EDT

TildalWave

6:43 PM

I think it's also about time we think of a less silly name for C/2013 US10, if it's really gonna be visible to the naked eye in the coming months

TildalWave

6:54 PM

SSERVI Science and Exploration of Phobos & Deimos series: The Formation & Effects of Stickney Impact on Phobos w/ K. Ramsley is now accessible live as a teleconference via Adobe Connect.

Starts in 5 minutes

TildalWave

8:22 PM

Another OT event that some here might be interested in: National Academy of Engineering Forum: The Grand Challenges for Engineering: Imperatives, Prospects and Favorites, on Oct. 5 at 1:30 pm UTC

Also potentially of interest: U.S. National Committee on Theoretical and Applied Mechanics Workshop on Predictive Theoretical and Computational Approaches for Additive manufacturing, Oct. 7-8 starting at 12:00 pm UTC

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