darrellbear
darrellbear t1_je33kmu wrote
Reply to Lea Thompson in the 1980s makes me contemplate about me being born in the wrong era by [deleted]
She was in Jaws 3 a year or two before Back to the Future. She was a saucy little thing, ran around in a little bikini, yum.
darrellbear t1_jd15rxf wrote
Reply to Another Green World is flawless by JunebugAsiimwe
Before And After Science, also by Brian Eno, rocks. It's not instrumental, though. Taking Tiger Mountain is good too. Music For Airports is instrumental.
Explosions In The Sky has some great instrumental albums, The Earth Is Not A Cold Dead Place is a favorite.
Jean Michel Jarre's Equinoxe and Oxygene albums are great instrumental works as well. Equinoxe is an all time favorite.
darrellbear t1_jcwbwi0 wrote
Reply to comment by ledfrisby in Moon and Mars by theillini19
Mars is about twice the diameter of the moon, ~4,000 miles vs ~2,000 miles. It appeared about 1/100th the size at the time of the occultation, meaning it was about 200 times farther away, 50 million miles vs a bit less than 1/4 million for the moon. Both objects were also at opposition that night, Dec 7/8, 2022, 180 degrees from the sun in the sky from Earth's point of view. The moon is full at opposition (the very definition of truly full), planets farther from the Sun are basically closest, biggest and brightest during opposition. The Sun, Earth, moon and Mars were all in a straight line in space that night, an event called syzygy.
darrellbear t1_jbcu1vt wrote
AKA sunbeams, aka crepuscular rays. If you ever see crepuscular rays when you look at the sunset, turn around and face the opposite direction. You may see dark counterparts, known as anticrepuscular rays. They're the shadows of the clouds causing the sunbeams in the west. Anticrepuscular rays converge on the eastern horizon, opposite the sun's position in the west.
https://apod.nasa.gov/apod/ap200318.html
https://apod.nasa.gov/apod/ap160627.html
The same holds at sunrise, of course.
darrellbear t1_jaz4xjb wrote
Reply to comment by AudibleNod in TIL Until 1921 the Colorado River did not flow through the State of Colorado. It took an act of Congress to “move” the river into the state by renaming the Grand River and adding it to the Colorado River. by triviafrenzy
It became the Colorado where the Grand and Green Rivers came together, near Moab, Utah.
darrellbear t1_ja1c41k wrote
Reply to Today I Learned that the moon distances itself from the Earth by about 3,78 cm(1.49 inches) every year. by LucasOIntoxicado
Conservation of angular momentum--the moon's tidal effects on Earth are transferring the Earth's angular momentum to the moon. The moon speeds up as a result, which causes its orbital distance from Earth to increase over time. The Earth's loss of angular momentum causes it to spin on its axis more slowly, increasing the length of day over time. Total energy of the system is conserved.
darrellbear t1_j9xix8r wrote
Reply to What’s a good upgrade from a telescope that can barely see jupiters stripes that isn’t worth a kidney? by Super-Gerd
Orion 8 inch Dobsonian. The Apertura 8 inch Dob looks good too. Like so much else nowadays, telescope prices are way up.
darrellbear t1_j9u9gul wrote
Reply to comment by Jumper-Man in Beef roast with traditional sides [homemade] by Turtleramem
It was a joke, evidently a very small one.
darrellbear t1_j9s246e wrote
Reply to comment by pksullivan in Beef roast with traditional sides [homemade] by Turtleramem
Silly, that's a Yorkshire pudding.
darrellbear t1_j9d8fg8 wrote
Reply to I want to see the Andromeda Galaxy with my naked eye. I can't, I have a method of finding it using Cassiopeia and a field to walk out on to get away from the lights. by vnevner
It might help if you take a pair of binoculars as well. Once you find it in binos looking in the same direction naked eye can help. And as mentioned, averted vision helps too. Dark skies are necessary, of course, as are dark adapted eyes.
darrellbear t1_j91llbd wrote
Reply to Hot bacon [homemade] by Turtleramem
That poor dog!
darrellbear t1_j8ps4g0 wrote
Reply to Earth changing seasons. by ooMEAToo
Northern hemisphere winter happens when the Earth is relatively close to the Sun in its orbit, so we have that going for us. Winters would be colder and summers hotter if we were farther from the Sun during our winter.
darrellbear t1_j8log59 wrote
Reply to [image]It cost nothing to be kind by startwithaidea
I recently saw it expressed as "Good manners cost nothing".
darrellbear t1_j82zbs4 wrote
Reply to PriceCutter Natl/Republic by socialistpizzaparty
Hint: why else would PriceCutter be selling it?
darrellbear t1_j7bfn4i wrote
Reply to comment by hertzzogg in Is the yearly cycle of varying daylight durations from day to day throughout time consistent? Is the cycle we have today the same as in the 17th century? by meellowstar
You have that backwards--the farther north the shorter the daylight during winter. Cross the arctic circle in winter, the sun doesn't rise at all. Conversely, during summer, the farther north the longer the daylight. Cross the arctic circle, the sun doesn't set at all during summer.
The same applies in the southern hemisphere, of course.
darrellbear t1_j6zw1mq wrote
Reply to Telescope choices by Successful_Ad3337
Dobsonian telescopes will give you the most bang for your buck. I'd say a 6 inch aperture at a minimum for an adult. An 8 inch will get you years down the road. The sky's the limit from there. DO NOT BUY A DEPARTMENT STORE TELESCOPE, they're junk. Orion Dobs are well regarded:
A caution: like so much nowadays, telescope prices have risen a lot. You should get an extra eyepiece or two of various focal lengths, that's how you change magnification. You can also get a Barlow lens, which multiplies focal length by 2X or 3X. Telescopes and astronomy are a vast subject, barely scratching the surface here.
One of the best things you can do--find your local astronomy club, go to a meeting. They often have public star parties, attend some. The members are happy to show off their equipment and to answer questions. Learn about different types of scopes, it will help you make an informed decision when it's time to buy.
darrellbear t1_j6ldbpy wrote
Reply to comment by AbleReporter565 in ELI5: Why does the order of adjectives matter? by AbleReporter565
Also, put others before yourself--it's not "Me and my friends went to the movies", it's "My friends and I went to the movies".
darrellbear t1_j6djsve wrote
Reply to [homemade] Skillet Burritos by Gabbledorf
You invented enchiladas! Try green sauce next time. Even better, try green chile with pork next time, and put a little sour cream on top.
darrellbear t1_j5fst0z wrote
Reply to comment by TheGreyBull in [OC] The gang is about to drop their new sick Album! by GoodKindOf
Chico and the Dustmops.
darrellbear t1_j5fbnpa wrote
Reply to comment by tehrmuk in Not much but finally moved the the countryside and actually have a nights sky. by ProfessorEsoteric
That is Orion's sword. The Orion Nebula is in the sword, one of the grandest things to look at with a telescope in the entire sky.
darrellbear t1_j5aud0d wrote
Reply to Trying to observe the upcoming C/2022 E3 (ZTF) Comet with binoculars by EstablishmentOk1324
Any bino over 10x needs tripod support. A 16x32mm bino will have a 2mm exit pupil, which is terrible, especially for night time use.
darrellbear t1_j53rilg wrote
Reply to Ancient humans and their early depictions of the universe: “It is no exaggeration to say that astronomy has existed as an exact science for more than five millennia,” writes the late science historian John North. by clayt6
Some constellations are ancient, such as Scorpius, going back thousands of years. People used to put their stories in the skies. Shamans and night watch came to know the sky, noticed changes like planetary movement, the sun, moon and such, and sought meaning in what they saw. Learning when to plant crops came from observing the skies.
darrellbear t1_j478h5t wrote
Get a torque wrench of the appropriate range (in/lbs, ft/lbs, etc), set it to the desired amount and tighten the screw/s. The wrench will let you know when you've reached the setting--it will click, release, illuminate or such. Specific tightening techniques can be required for certain applications such as engine head bolts, wheels, etc.--bolts may be required to be tightened in a certain order/pattern/amount, multiple passes, etc.
darrellbear t1_j44ei30 wrote
Hydrogen emission is red. Oxygen is blue-green. These are true colors and make up the bulk of emission. Other elements do produce colors, neon is red too, for instance. Emission happens when gases are ionized and then recombine--excited electrons leave the atoms, then rejoin. Photons of characteristic color/energy are released upon recombination, hence the red of hydrogen and blue-green of oxygen. Hydrogen is common in "stellar nursery" nebulas, hence they're mostly reddish. Planetary nebulas often show a lot of green due to doubly ionized oxygen.
The so-called Hubble palette is actually false color, produced with narrowband filters--sulfur is shown as red, hydrogen as blue, oxygen as green.
darrellbear t1_je8j2dr wrote
Reply to The Whirlpool Galaxy as imaged from my personal observatory in Ohio by fyrfytr310
AKA Messier 51. Two galaxies gravitationally interacting. Several background galaxies as well. Nicely done! Details on your setup, imaging and such?