Ultimate space simulation software

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by midtskogen
16 Dec 2018 08:16
Forum: Off-topic Discussions
Topic: Unusual weather
Replies: 247
Views: 45287

Unusual weather

Winter had to make three attempts here, the first in late October, second in late November, both times it rained away after a few days, and finally on the 6th December 20 cm of snow came to stay and a white Christmas is a sure thing according to the forecast.  But we have a 80-90% chance of white Ch...
by midtskogen
16 Dec 2018 07:11
Forum: Off-topic Discussions
Topic: UFO Sightings and Possible Explanations
Replies: 61
Views: 5027

UFO Sightings and Possible Explanations

I have photographed a thousand bright meteors or so, and only one was visible for more than 30 seconds from my position, and if I remember correctly, it was visible for a minute and a half, first appearing over southern Sweden going west over the British Isles and disappearing west of Ireland.  Thes...
by midtskogen
15 Dec 2018 14:51
Forum: Off-topic Discussions
Topic: Show off your work
Replies: 325
Views: 52664

Show off your work

by midtskogen
15 Dec 2018 05:41
Forum: Off-topic Discussions
Topic: UFO Sightings and Possible Explanations
Replies: 61
Views: 5027

UFO Sightings and Possible Explanations

25433 meteors that get brighter than Venus are called fireballs, and bolides are brighter than the full Moon.  Yes, that's a frequent definition, but it's not strictly followed.  Nor does it hint much whether it could be a meteorite dropping event, for which at least magnitude -8 (at 100 km distanc...
by midtskogen
13 Dec 2018 09:42
Forum: Off-topic Discussions
Topic: UFO Sightings and Possible Explanations
Replies: 61
Views: 5027

UFO Sightings and Possible Explanations

The closest thing to a UFO experience I've had was when I was around 10 or so playing with a friend in a pile of snow.  It was dark, but suddenly there was a flash of light around us, like a spotlight forming a circle of white light a few metres across with us two in the middle.  It lasted only a fr...
by midtskogen
13 Dec 2018 05:58
Forum: Off-topic Discussions
Topic: UFO Sightings and Possible Explanations
Replies: 61
Views: 5027

UFO Sightings and Possible Explanations

Some things to note to tell aircrafts, satellites, meteors and space debris apart: Speed: Aircrafts move slower than meteors and space debris, unless the aircraft is close in which case you should hear it.  Satellites are always slow.  Meteors can move slowly if you view them almost head on, but it'...
by midtskogen
13 Dec 2018 03:44
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 514
Views: 57156

Science and Astronomy News

25393  If the meteor was slow, then it definitely was not a Perseid.  Perseids come in at almost 60km/s! Though rare, you can see a slow Perseid if you happen to view it almost head on.  Observed speed depends not only on entry speed, but also on the angle it is observed and distance.  But if it la...
by midtskogen
12 Dec 2018 23:07
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 514
Views: 57156

Science and Astronomy News

25368 The catch with the Geminids here is that it's the peak of our wet season We have 2/3 cloud cover on averege with little seasonal variation (slightly less in spring, slightly worse around now).  The only catch from all cameras previous night was: x.jpg I met a wall of ice crystals as I went ou...
by midtskogen
12 Dec 2018 03:14
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 514
Views: 57156

Science and Astronomy News

I much prefer the Geminids. The Perseids move fast and are visible for jusy a fraction of a second, whereas the Geminids may persist for seconds. The Geminid count seems more stable. And the Perseids are barely visible in Norway because of the bright summer nights. And lastly, the Geminids are rocky...
by midtskogen
12 Dec 2018 01:02
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 514
Views: 57156

Science and Astronomy News

Remember the Geminids over the 2-3 next days, the most faithful meteor shower of the year.  It always gives a steady flow of meteors, and quite a few fireballs as well.  Unlike other showers, Geminids are rocky, sometimes reaching as low as 30-40 km above ground. Here's one that I recorded yesterday...
by midtskogen
10 Dec 2018 13:17
Forum: Science and Astronomy Discussions
Topic: Astrophotography
Replies: 290
Views: 33241

Astrophotography

I nice fireball photographed from Sørreisa in northern Norway this afternoon.  Probably looks more impressive than it is due to a thin layer of clouds. x.jpg I've just added an automatic extraction of the path, reprojected and rotate so it always forms a straight line to the right: y.jpg The next st...
by midtskogen
10 Dec 2018 06:49
Forum: Off-topic Discussions
Topic: Unusual weather
Replies: 247
Views: 45287

Unusual weather

And snow's here to stay at last, after two failed attempts.  I went cross country skiing in the forests of Oslo for the first time on Saturday.  A few weeks later than last year, but still pretty normal.  The previous trip was on 1 May, so a gap of 7 months and 7 days.
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by midtskogen
10 Dec 2018 06:03
Forum: Science and Astronomy Discussions
Topic: Population Growth and Sustainable Development
Replies: 52
Views: 471

Population Growth and Sustainable Development

Yes, which is why I had "to the degree the infrastructure can be allowed".  That applies to the areas just outside the park which are more acceptable.  These days people are seriously discussing constructing wind farms next to or in national parks, for the sake of the climate, which is not...
by midtskogen
10 Dec 2018 03:19
Forum: Science and Astronomy Discussions
Topic: Population Growth and Sustainable Development
Replies: 52
Views: 471

Population Growth and Sustainable Development

During the Fukushima TV coverage here there was a scientist giving some good advice on the question whether Norwegians in Tokyo should leave the country and go home.  She advised that if they do, they would receive a higher dose of radiation during the flight back home than they would get from stayi...
by midtskogen
10 Dec 2018 01:31
Forum: Science and Astronomy Discussions
Topic: Population Growth and Sustainable Development
Replies: 52
Views: 471

Population Growth and Sustainable Development

First, forget about carbon emissions.  In the big picture it's irrelevant, or will be.  I'll get back to that.  It's also overhyped.  All kinds of environmental problems have been incorrectly attributed to carbon emissions.  For instance, there's been a major shift in the biodiversity over the past ...
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