Jupiter's moons (with the notable exception of Io) are completely covered in ice tens to hundreds of km deep. They do not have ice "caps" that could be shrinking. If they were losing ice, it would be more like the south polar plumes of Enceladus. In that case, we'd be far more likely to observe the plume of escaping material than to measure the mass of ice remaining. No such plume has been observed on any of the Galileans. Io has no ice to speak of, and therefore cannot be losing any.
Moreover, the orbital period about the Sun is about twelve years, and the tidal periods about Jupiter are several days. Variations on an Earth year cycle would not be astronomically significant.
How can you have a "moderate leaning?" Would "moderate" imply you're not leaning in any direction (at least not much)? I know I'm being pedantic, but that's how my day's shaping up.
I'm the same way. A standard (in the US) 20 oz bottle usually lasts me at least two meals. And I don't drink it every day, so it sometimes goes flat before I finish it. I did not feel well after the last time I drank the entire bottle at one sitting.
I actually like those mini-cans you sometimes see with 7-8 oz. It's a total ripoff on price, but I'm more likely to actually finish it before it goes flat.
Dinosaurs are a monophyletic clade as long as you include birds, which descended from the Theropods.
Theropods and Sauropods are much more closely related to each other than to lizards. They're even both on the Saurischian branch. All of the above are Diapsids in the Sauria clade, but the ancestors of the lizards and snakes (Lepidosauromorpha) branched off from the ancestors of the crocoldilians and Dinosaurs (Archosauromorpha). I've spent way too much time looking at dinosaur phylogeny lately.
My son's really into that too. I like that they try to work some science into it. But while I have no problem with talking, time-traveling, train-riding dinosaurs, it bothers me that the female pteranodons have eyelashes.
Quark may still be allowed. It also refers to a type of fresh cheese. However, it might be considered a German word, in which case it's still invalid. Also I have no idea when it was first produced, but likely before 1938.
Re:Navy showers every *3* days?
on
Christmas On Mars
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· Score: 5, Funny
Especially important when working in the "Musk" Observatory.
It wouldn't have been that remarkable, because people had been already been milking sheep and possibly goats for millenia by the time the cow was domesticated.
Not at all; I think that would be a cool project. It just requires a larger baseline than the Earth's orbit and/or larger telescopes. Drop these at the Sun-Neptune Lagrange points, and it might work for the nebulae.
You're not going to get enough parallax on something as distant as a galaxy to be useful for stereo imaging. If you place these in Earth orbit, on opposite sides of the Earth, you're looking at on order 10000 km separation. The distance to the Canis Major Dwarf Galaxy (let's call that the nearest one) is 25,000 ly, or on order 10^17 km. That gives you a parallax of 20 nano-arcseconds. Hubble's diffraction limited resolution is 50 milli-arcseconds. (Interferometry won't help here, since we're trying to compare two distinct images from individual telescopes).
There are closer nebulae. The Orion nebula is only 1300 ly away, so we're looking at a parallax of 0.2 micro-arcseconds. Still not enough.
If, as another poster suggested, we put them at L4 and L5 (Sun-Earth), we're talking more like a few times 10^8 km separation. So that puts us in the few milliarcsecond range for the Orion nebula. Not quite good enough for visible light, but UV could work.
You are technically correct. The best kind of correct. But it is curious that there are instances where my original assertion (mostly I was joking) holds. Full disclosure: I'm a northerner. Born in Ann Arbor, MI and grew up in Northern VA (which is culturally part of DC, not VA) and cannot say "y'all" with any legitimacy.
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Minor quibble: You cannot be on a light beam going half the speed of light because the light beam, by definition, is moving at the speed of light.
If not sooner.
Yes. At the inauguration for one. Unless you're suggesting that one of them was a replicant...
Jupiter's moons (with the notable exception of Io) are completely covered in ice tens to hundreds of km deep. They do not have ice "caps" that could be shrinking. If they were losing ice, it would be more like the south polar plumes of Enceladus. In that case, we'd be far more likely to observe the plume of escaping material than to measure the mass of ice remaining. No such plume has been observed on any of the Galileans. Io has no ice to speak of, and therefore cannot be losing any.
Moreover, the orbital period about the Sun is about twelve years, and the tidal periods about Jupiter are several days. Variations on an Earth year cycle would not be astronomically significant.
The lack of plate tectonics is precisely why the history is preserved. Unlike on the Earth, the crust never gets recycled.
That number has TRIPLED in the last year alone.
How can you have a "moderate leaning?" Would "moderate" imply you're not leaning in any direction (at least not much)? I know I'm being pedantic, but that's how my day's shaping up.
The impactor was in an extremely low earth orbit.
You've been moderated +5 Funny, but I fear this scenario is EXACTLY what is going to happen.
I'm sorry, this is AMERICA. Where we care about portion sizes, not flavor.
Turns out the cat will not stay in the box. So the experiment can never be done.
It's not that remarkable. Billion to one coincidences happen nine times out of ten.
I'm the same way. A standard (in the US) 20 oz bottle usually lasts me at least two meals. And I don't drink it every day, so it sometimes goes flat before I finish it. I did not feel well after the last time I drank the entire bottle at one sitting.
I actually like those mini-cans you sometimes see with 7-8 oz. It's a total ripoff on price, but I'm more likely to actually finish it before it goes flat.
But never for breakfast.
Agreed. Although I personally would swap out the OJ for additional vodka. Cut out the sugar altogether.
Dinosaurs are a monophyletic clade as long as you include birds, which descended from the Theropods.
Theropods and Sauropods are much more closely related to each other than to lizards. They're even both on the Saurischian branch. All of the above are Diapsids in the Sauria clade, but the ancestors of the lizards and snakes (Lepidosauromorpha) branched off from the ancestors of the crocoldilians and Dinosaurs (Archosauromorpha). I've spent way too much time looking at dinosaur phylogeny lately.
It's the term "Reptile" that doesn't make sense.
My son's really into that too. I like that they try to work some science into it. But while I have no problem with talking, time-traveling, train-riding dinosaurs, it bothers me that the female pteranodons have eyelashes.
I've never found that children lack interest in dinosaurs.
Quark may still be allowed. It also refers to a type of fresh cheese. However, it might be considered a German word, in which case it's still invalid. Also I have no idea when it was first produced, but likely before 1938.
Especially important when working in the "Musk" Observatory.
At least with an enemy you know where you stand, but a "neutral"?
It wouldn't have been that remarkable, because people had been already been milking sheep and possibly goats for millenia by the time the cow was domesticated.
You're going to waste helium on balloons? It's much more valuable as a coolant for the collider.
Not at all; I think that would be a cool project. It just requires a larger baseline than the Earth's orbit and/or larger telescopes. Drop these at the Sun-Neptune Lagrange points, and it might work for the nebulae.
You're not going to get enough parallax on something as distant as a galaxy to be useful for stereo imaging. If you place these in Earth orbit, on opposite sides of the Earth, you're looking at on order 10000 km separation. The distance to the Canis Major Dwarf Galaxy (let's call that the nearest one) is 25,000 ly, or on order 10^17 km. That gives you a parallax of 20 nano-arcseconds. Hubble's diffraction limited resolution is 50 milli-arcseconds. (Interferometry won't help here, since we're trying to compare two distinct images from individual telescopes).
There are closer nebulae. The Orion nebula is only 1300 ly away, so we're looking at a parallax of 0.2 micro-arcseconds. Still not enough.
If, as another poster suggested, we put them at L4 and L5 (Sun-Earth), we're talking more like a few times 10^8 km separation. So that puts us in the few milliarcsecond range for the Orion nebula. Not quite good enough for visible light, but UV could work.
You are technically correct. The best kind of correct. But it is curious that there are instances where my original assertion (mostly I was joking) holds. Full disclosure: I'm a northerner. Born in Ann Arbor, MI and grew up in Northern VA (which is culturally part of DC, not VA) and cannot say "y'all" with any legitimacy.