Search found 78 matches

by Altair
Sat Dec 09, 2017 12:04 pm
Forum: Apollo, and more space hoaxes
Topic: Stars/no stars - and other space oddities
Replies: 92
Views: 103265

Re: Stars/no stars - and other space oddities

Anyway, it's quite strange that down on Earth seems to be no problem in photographing scenes where stars are quite apparent, like this 360º shoot in Google Maps. I can understand that a photo in daylight requires a small aperture and hence small and dim objects would not appear. But how about 'night...
by Altair
Thu Dec 07, 2017 3:39 pm
Forum: THE LIVING ROOM
Topic: THE DERAILING ROOM
Replies: 1784
Views: 1091737

Re: Amateur Astronomy: What can we see?

Well, if the japanese are up to things like this one... It's just a matter of scaling. Ijxe9qghRAU EDIT: In fact this was not an hologram, just a projection in transparnent screen. However, I did a bit more of research on this topic, and it seems that already in 1969 it was possible to project holog...
by Altair
Wed Dec 06, 2017 12:11 pm
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 817
Views: 741157

Re: Does Rocketry Work beyond Earth's atmosphere?

Anyway, I think it could be much, much simpler than that. Forget about Joule-Thomson, Newton's third law & so on. It's more than enough with the 2nd law. If we want to accelerate a solid body, we must apply a force upon it. Period. In a rocket, the only places where we can do that are the nozzles, a...
by Altair
Tue Dec 05, 2017 5:34 pm
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 817
Views: 741157

Re: Does Rocketry Work beyond Earth's atmosphere?

Anyway, I'm inclined to think that LEO sats (but no more than that) could be launched by just ballistic rockets, without need for them to work in the vacuum. I've been googling how it all began, with the Sputnik. If we have to believe Wikipedia, it was launched by a R-7 rocket , which was a missile ...
by Altair
Sun Dec 03, 2017 10:14 pm
Forum: Apollo, and more space hoaxes
Topic: Fakery in Orbit: THE I$$
Replies: 1556
Views: 1500854

Re: Fakery in Orbit: THE I$$

Interesting... It also seems awkward that back in 1969 they managed to transmit live from the Moon, but they had lost the know-how by 1998; maybe the Apollo engineers had retired by then. But anyway, there was no problem in taking a bulky iMax camera in a high risk spacewalk for fixing the Hubble te...
by Altair
Fri Dec 01, 2017 6:34 pm
Forum: Apollo, and more space hoaxes
Topic: NASA'S F.E. DBA STRATEGY
Replies: 179
Views: 266737

Re: NASA'S FLAT EARTH DBA STRATEGY

Oh, and also the 'still' clouds...
by Altair
Fri Dec 01, 2017 6:31 pm
Forum: Apollo, and more space hoaxes
Topic: NASA'S F.E. DBA STRATEGY
Replies: 179
Views: 266737

Re: NASA'S FLAT EARTH DBA STRATEGY

Anyway, I've found that some of the objections in the 'flat earth' videos are quite real (not that I'm a 'flat-earther', of course). For example, the one I'm bringing points to a quite evident flaw in that amazing HD time-lapse shoot in 4K from "the Thing". Namely, the long lasting lightnings and st...
by Altair
Sat Nov 25, 2017 9:09 am
Forum: Apollo, and more space hoaxes
Topic: Fakery in Orbit: THE I$$
Replies: 1556
Views: 1500854

Re: Fakery in Orbit: THE I$$

A possible hypothesis: Could it be something like https://en.wikipedia.org/wiki/Project_Echo? I'm not sure it could be put in orbit with just a ballistic rocket, but let's suppose it can be sent as a very lightweight deflated balloon which once in orbit would inflate to a very BIG size. That would e...
by Altair
Tue Nov 14, 2017 11:33 am
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 817
Views: 741157

Re: Does Rocketry Work beyond Earth's atmosphere?

Out of my interest and recent skepticism about space travel, I've recently followed "live" in YT two launches: the OA-8 resupply vehicle (https://www.youtube.com/watch?v=JM5POTQoSXY) and today the JPSS-1 NOAA observation satellite (https://www.youtube.com/watch?v=5wUrNNnkR5Y). Bad luck, as both laun...
by Altair
Fri Nov 10, 2017 2:49 pm
Forum: Apollo, and more space hoaxes
Topic: Why are these two videos from same event so different?
Replies: 7
Views: 7158

Re: Why these two video from the same event are so different

Well, maybe they did like with Star Wars, a digitally remastered version.
Also, I think it was noted the really funny orbit that Gemini is following, very apparent in the accelerated version.
by Altair
Tue Nov 07, 2017 9:29 pm
Forum: Apollo, and more space hoaxes
Topic: Fakery in Orbit: THE I$$
Replies: 1556
Views: 1500854

Re: Fakery in Orbit: THE I$$

Yes, I also know that... ;) But the epoch data just tell you where the object will be at a given time. But nothing about its attitude relative to the observer, and that's a key parameter. The official version says the ISS it's mainly a tube-shaped object with lots of solar panels attached. Those sho...
by Altair
Tue Nov 07, 2017 12:05 pm
Forum: Apollo, and more space hoaxes
Topic: Fakery in Orbit: THE I$$
Replies: 1556
Views: 1500854

Re: Fakery in Orbit: THE I$$

Even more, I think that the brightness of such an irregular object, whose orientation is not easily ascertained, would be extremely hard to predict. I don't know what kind of algorithm is using heavens above, but my take is that brightness prediction would be feasible only for very simple -i.e. sphe...
by Altair
Mon Nov 06, 2017 9:45 pm
Forum: Apollo, and more space hoaxes
Topic: Fakery in Orbit: THE I$$
Replies: 1556
Views: 1500854

Re: Fakery in Orbit: THE I$$

But the distance when setting over the horizon is 2.300 kms. And it should be still visible! So, can anyone one imagine spotting a 747 from 2.300 kms. away? Ok, let's concede that it could be a highly reflective object and it would be easier to see against the dark firmament, but still looks pretty...
by Altair
Mon Nov 06, 2017 7:40 am
Forum: Apollo, and more space hoaxes
Topic: Fakery in Orbit: THE I$$
Replies: 1556
Views: 1500854

Re: Fakery in Orbit: THE I$$

You generally won't see anything, except the sun and maybe the moon, right on the horizon due to atmospheric extinction. That's why heavens Above (and other sites) give 10 degrees above the horizon as the point at which it is considered observable. This is around 1440 km away and the math for the 7...
by Altair
Sun Nov 05, 2017 6:15 pm
Forum: Apollo, and more space hoaxes
Topic: Fakery in Orbit: THE I$$
Replies: 1556
Views: 1500854

Re: Fakery in Orbit: THE I$$

Even more, if you have a look at a 747 flying at cruise altitude (about 12 km) you'll barely see any details, it's just a speck in the sky. Now let's put our plane in orbit at... 400 km. Would it be so visible from the ground as the purported ISS? Dear Altair, You have no idea of how much I treasur...