Ultimate space simulation software

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by Watsisname
20 May 2019 01:32
Forum: Development
Topic: Work progress 0.990
Replies: 1334
Views: 401462

Work progress 0.990

28954 Defintely a thorn in the side of realism. I hope we can make a visible spectrum map one day. We'll get right on that.  That is, after we procure enough funding for a mission to image the entire surface of Titan and/or Venus from a drone flying beneath the haze layers.  Speaking of which, we a...
by Watsisname
16 May 2019 20:57
Forum: Off-topic Discussions
Topic: Conspiracy Theory Thread
Replies: 98
Views: 18213

Conspiracy Theory Thread

Ah, much better.  This man can properly summon UFOs.

by Watsisname
16 May 2019 18:46
Forum: Off-topic Discussions
Topic: Conspiracy Theory Thread
Replies: 98
Views: 18213

Conspiracy Theory Thread

Where are the flying saucers?  I just see bright lights.  Signal flares by the looks of it (and much more than just a couple miles away). Sodium would easily explain the golden color.  I would love to be proven wrong, someone should bring a spectrometer to the next sighting.
by Watsisname
16 May 2019 00:42
Forum: Off-topic Discussions
Topic: Conspiracy Theory Thread
Replies: 98
Views: 18213

Conspiracy Theory Thread

Round trip airfare between Seattle and Tokyo: ~$1000
Gamma ray source and detector:  a few hundred dollars
Summon a flying saucer to study:  ???
by Watsisname
14 May 2019 15:48
Forum: Science and Astronomy Discussions
Topic: Upcoming Astronomy & Science Events - and YOU
Replies: 8
Views: 983

Upcoming Astronomy & Science Events - and YOU

I feel that Chelyabinsk should be a stronger motivator for asteroid impact awareness, since it was so well documented, did do damage to a populated area, and if that object had been a little larger or had come in at a steeper angle, it likely would have devastated the city.
by Watsisname
09 May 2019 00:45
Forum: Feedback and Suggestions
Topic: General questions about SpaceEngine
Replies: 459
Views: 66364

General questions about SpaceEngine

28764 Interesting!   So hypothetically if we were floating in space half a mile from the Orion Nebula we wouldn't see color in it like we can see in photos?  Even if it covered half the visible sky?  I figured you could see colors more readily up close because the object would appear much large...
by Watsisname
07 May 2019 21:43
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Questions
Replies: 1508
Views: 164003

Science and Astronomy Questions

28749  Would the whole atmosphere explode or something if I opened a lighter on the surface? No.  For the atmosphere itself to ignite the oxygen-methane mixture needs to be sufficiently close to the stoichiometric 2:1 ratio.  The best way to see this is with a  flammability diagram.   In this parti...
by Watsisname
06 May 2019 19:25
Forum: Off-topic Discussions
Topic: Show off your work
Replies: 365
Views: 66130

Show off your work

This isn't quite the same as ultraviolet photography, where you see the world with ultraviolet eyes.  Rather, think of it as normal photography, but with an ultraviolet light source.  F luorescence is when that short wavelength UV light is absorbed and then the energy re-emitted it at longer, usual...
by Watsisname
06 May 2019 14:31
Forum: Off-topic Discussions
Topic: Show off your work
Replies: 365
Views: 66130

Show off your work

It's a thought.  I normally only rock hunt during the day since that makes most objects of interest easier to find, but fluorescence is too dim to see in daylight.  Also many objects I'm interested in don't fluoresce, like petrified wood.  Hunting specifically for fluorescence at night might be inte...
by Watsisname
06 May 2019 04:27
Forum: Off-topic Discussions
Topic: Show off your work
Replies: 365
Views: 66130

Show off your work

The agate/chalcedony collection continues to grow, and now contains a few fluorescent specimens.  Here they all are under incandescent light. https://i.imgur.com/6BJ4SmR.jpg    And now illuminated under 405nm (nearly ultraviolet) light. https://i.imgur.com/kQOY9za.jpg Fluorescence is always a nice s...
by Watsisname
04 May 2019 00:23
Forum: Off-topic Discussions
Topic: The Future of Humanity & Intelligent life in the universe
Replies: 389
Views: 67486

The Future of Humanity & Intelligent life in the universe

28656 China is projected to reduce their CO2 output by two thirds by 2030 and that will help a lot. Do you have a reliable source for this projection?    The most recent large metastudy of projections for China's CO2 emissions that I have seen is this one from 2015: A review of Chinese CO2 emission...
by Watsisname
30 Apr 2019 11:59
Forum: Science and Astronomy Discussions
Topic: The first black hole photo
Replies: 29
Views: 1296

The first black hole photo

I just came across this nice video by ESO.  It uses (correctly cited) some footage from Space Engine. :)

by Watsisname
27 Apr 2019 01:03
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 639
Views: 76780

Science and Astronomy News

28563 And further digging led me to this article. This paper is relevant too.  What the authors (including Adam Rie ss, who is a big name in this field!) are checking is whether some effects of local structure in the universe could be causing our estimates of the uncertainties in the measurements i...
by Watsisname
27 Apr 2019 00:49
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 639
Views: 76780

Science and Astronomy News

28560 But I couldn't find the paper this supposedly is based on.  Does anyone know where this comes from? Probably this:   Cosmological constraints from the Hubble diagram of quasars at high redshifts . PBS Space Time has a good summary of it, and in the cosmology thread I also give some further in...