Astronomy
- Z's bouncy tits
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Re: Astronomy
I want to get into astrophotography.
I have a dslr and tripod, but only an 18-55mm lens.
Saw a video on how to use them for images, but it's cloudy here lately.
I have a dslr and tripod, but only an 18-55mm lens.
Saw a video on how to use them for images, but it's cloudy here lately.
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Re: Astronomy
it's a little depressing how far apart things actually are in the universe
THE SIMULATION CREATORS MADE IT THIS WAY
THE SIMULATION CREATORS MADE IT THIS WAY
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Re: Astronomy
Phosphine in Venus' atmosphere, what does that imply Vamphy
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Re: Astronomy
are these blood incantation lyrics
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Re: Astronomy
Astronomical distances and timescales are dumb hueg. But one thing that always impressed me is how precise measurements can get in astronomy even without advanced tools.
E.g.: Mercury's orbit is elliptical, but the ellipse rotates around the Sun slowly (called perihelion precession). It does so by about 43 milliarcsec per century. That's less than a thousandth of a degree rotation of the ellipse, discovered centuries ago. Done by eye, without computers, and had no real explanation until early last century (general relativity).
E.g.: Mercury's orbit is elliptical, but the ellipse rotates around the Sun slowly (called perihelion precession). It does so by about 43 milliarcsec per century. That's less than a thousandth of a degree rotation of the ellipse, discovered centuries ago. Done by eye, without computers, and had no real explanation until early last century (general relativity).