Meteoric Sunday

WHY ARE SO MANY METEORS GREEN? The Moon is not made of green cheese. Neither are meteors. But if that’s true, why are so many meteors green? During the recent Perseid meteor shower, sky watchers witnessed hundreds of green meteors. Take a look at this fireball. And this one. And this one. And, last but not least, this one:

“This green Perseid cut right through the Double Cluster (h Persei and χ Persei) in Perseus,” says photographer David Blanchard of Flagstaff, Arizona, who caught the verdant streak during a 30 second exposure with his Nikon digital camera.

The source of the green is not cheese, it’s air. Green is caused by oxygen in Earth’s atmosphere. When a meteoroid rips through the atmosphere, air in its path becomes so hot that oxygen molecules briefly lose one of their electrons. They recombine (e + O2+) very rapidly, emitting green photons as a side-effect. A similar process is responsible for the green colors of many auroras.

Blanchard’s meteor has a fringe of yellow alongside the green. Yellow, it turns out, is due to the meteor. When a sodium-rich meteoroid cuts through the atmosphere, hot sodium vapors glow yellow like a sodium discharge lamp.

@ SPACEWEATHER

About Den

Always in search of interesting things to post. Armed with knowledge and dangerous with the ladies.
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23 Responses to Meteoric Sunday

  1. David B. Benson says:

    3:37 am? That was a loong day, Den.

    Like

  2. Carol says:

    Soooo humid, gah. I ran the A/C all day yesterday because my granddogs were here, but today I’m resisting and it’s almost 2:00 P.M.

    I can’t believe how tired I’ve been today. I should lay down for a few but am resisting that, too. I kept my bedroom door shut all day and night and slept on the twin bed. Addy eventually came in there, waking me up and I patted the bed for her to come up. She did, sprawled out and SHE fell asleep, but I couldn’t. I was so uncomfortable on my right side, I needed to get to my left side and couldn’t. No clock in the room so I don’t know how long I put up with that before I managed to push myself up and get off the bed. I laid on the couch and I know I fell asleep eventually because they woke me up around 6:30 a.m. I’ve been yawning ever since. The minute I go to the LR and watch some TV, I’ll probably doze off.

    I took the granddogs home around 9:10, let them run around outside for awhile. Back in the house, I waited for the new dog sitter and two good things: she showed up 5 minutes early AND she drives a Toyota. Three Toyotas at Jill’s this morning.

    I’m going to label some photos I downloaded from my cameras that will probably do me in and I’ll be sitting back in this chair, closing my eyes.

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    • Micki says:

      Did you sleep with the AC on…or some fans blowing on your? Maybe your lethargy is because of the humidity?

      High humidity can have a number of adverse effects on the human body. It can contribute to feelings of low energy and lethargy. In addition, high humidity can cause hyperthermia — over-heating as a result of your body’s inability to effectively let out heat.

      I mentioned in an email to a friend during our “heat wave” here that I sleep okay even w/o air conditioning, because “I sleep with one of my fans, and sometimes two.”

      She emailed back, cheekily, and asked, “what’s his name?” 😉

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      • Carol says:

        “What’s his name,” lol!

        The A/C was off all night and no fans. I think I was tired due to not enough of my normal, deep sleep. I usually sleep a solid 6 hours, the past week it’s been only 4, or a little more. I didn’t get my uninterrupted 4, that’s my guess.

        I went and laid on the couch after my last post, in the nice breezes coming in, I feel MUCH better now. I must have got a little sleep. I’m glad I didn’t turn the A/C on, it’s cooled down and the humidity has settled down quite a bit, too. Thank goodness for the breezes today, they really helped me save a few bucks.

        NOW I’ll work on my photos since I won’t keep yawing.

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  3. Micki says:

    When Trump opens his yapper, he’s routinely ridiculed for what he spews forth. But, President Truman wanted to buy Greenland, too.

    Below from VOX (not Fox)

    Is buying countries even a thing?

    Absolutely!

    The United States originally contracted with the government of Denmark to buy the present-day US Virgin Islands for $7.5 million in 1867 — but before the US Senate could ratify the treaty, the islands were struck by a devastating hurricane, leading senators to balk at the price. Then in 1900, the US agreed to buy the islands again, this time for the bargain price of $5 million. But then the Danish parliament balked. Under pressure from World War I, the deal finally got done in 1917, and the US bought the islands for $25 million.

    The US bought Alaska in 1867 for $7.2 million, bought most of the middle of the continental US from France for $15 million in 1803 with the Louisiana Purchase, and bought Tucscon, Arizona, and some surrounding areas in 1854 for $10 million.

    In other words, there’s nothing absurd per se about the idea of one country buying land from another. And, indeed, under earlier forms of Greenland’s legal status, this would basically be a bargaining question.

    Truman offered to buy Greenland but Denmark said no — for a higher price, it might have said yes. But as Greenland is now self-governing specifically because its mostly Inuit population doesn’t want to be a colony of Denmark, the idea that Greenland’s government would want to join the United States in exchange for money seems kind of far-fetched.

    Enough about legal realities, how would this change the Senate?
    The other reason Trump would probably back away from this idea if he looked too closely at it is that Greenland’s politics are very left-wing.

    They currently send two members to the parliament in Copenhagen; one sits with the Danish Social Democrats and the other sits with a further-left party. Important currents of Danish politics are kind of Trumpy in terms of anti-immigrant sentiment, but on economic policy, the entire Danish political spectrum is way to the left of the US debate, and Greenland’s voters are on the left-hand side of that spectrum.

    Consequently, it seems very likely that Greenland’s 56,000 or so residents would be sending Democrats to Congress.

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  4. David B. Benson says:

    Short pants season for the leggy. Classes Monday so almost all the Fall semester students are present. Just one bird sighted. A standard 29 minutes to the Old Post Office.

    Like

  5. Micki says:

    What is the nature of the neighborhood on NE High Street in Pullman?
    Close to campus? Single family, owner occupied residential? Rental? Or….?

    Like

  6. Micki says:

    This won’t be a good start to your Monday….

    COMMENTARY
    In blue Seattle, Trump supporters are starting to come out of hiding

    BY DANNY WESTNEAT Seattle Times

    When word got out during the last presidential election that Seattle developer Martin Selig would be supporting Donald Trump, the blowback from our liberal town, he said, was “stunning.”

    “Do you know what it’s like being a Jewish Republican in Seattle?” Selig told The Seattle Times. “The repercussions of what you hear from people is stunning.”

    In reaction, Selig, a billionaire, retreated from any affiliation with Trump in 2016 and said he wouldn’t even vote for him. It had become problematic just getting along in the city while wearing a MAGA hat.

    But that was then. This spring, Selig went all-in for Trump, maxing out to the president’s campaign with a donation of $5,600.

    What’s interesting isn’t so much that this one local rich guy decided to stop worrying and go full Trump. It’s that he’s hardly alone.

    The latest federal-election reports show that Trump is doing surprisingly well getting backers in this bluest of blue places. With nearly 15 months to go before the 2020 election, he already has drawn more donations from Seattle addresses than he did during the entire 2016 campaign.

    In Washington state, where his approval rating is 28 points underwater, Trump has still racked up far more donations, big and small, than any of the Democratic candidates – in fact more than the top six Democrats combined.

    I’m not talking about total dollars raised – though on that front Trump is a juggernaut, too. But the total number of donations reflects how many people are inspired enough by a candidate to send any amount of money, sometimes repeatedly. As I wrote in 2016, about how Democratic Socialist candidate Bernie Sanders was swamping the field in the donations category, “it’s like a measure of people power.”

    Well, now Trump, of all candidates, has nearly three times as many donations from Washington state as Bernie Sanders does. The Vermont senator has 8,080 itemized donations here, while Trump has the most ever recorded at this point in an election, by any candidate in either party, 21,657.

    What’s more, these are “itemized donations” – meaning the donors were required to list their names, occupations and addresses, and risk the backlash Selig was so concerned about.

    So you can look through the list and see that just in Seattle, Trump has the support of a seamstress, an airline pilot, a crane operator, a teacher, a nurse, a city of Seattle firefighter, a UW professor, a longshoreman and about a thousand others. In total they’ve given $93,042.

    Past this point of the last campaign, Trump had only six donations from Seattle – and when The Seattle Times contacted the donors, two said they wanted their money back.

    I asked Selig about his MAGA reunion, but he didn’t respond. That he’s been joined by so many others, though, shows the degree to which Trump has become “normal” for our politics, even as, in my view anyway, his behavior becomes increasingly unhinged.

    “So Trump’s full of outspoken bombast, so what?” said another of his Seattle donors, Fremont property manager Suzie Burke (she has given $375). “With the past Republicans, there was nothing to be passionate about. That’s why you’re seeing all these people coming out of the woodwork.”

    The leading local Trump donors, besides Selig, are Fischer Plumbing CEO Daryl Miller, who is on the board of Seattle Pacific University, and Medina developer Hossein Khorram. Like Selig, both gave the maximum, $5,600. Outside the area, the biggest donors are billionaire investment adviser Ken Fisher and his wife Sherrilyn, of Camas, who also both gave $5,600.

    Already Trump has surpassed his total 2016 pool of donors from Washington state, by 31%.

    So what, you may be saying, Trump’s not going to win out here anyway. True. But when your fundraising is breaking records, it indicates an intense passion for the candidate, as it did for Bernie Sanders. That counts for a ton in politics – and likely means Trump is stronger right now than his dismal polls indicate.

    It also suggests Trumpism is a force in the state, even as it’s in the minority.

    When Trump first got elected I did a running tongue-in-cheek interview with a guy I dubbed Seattle’s Only Trump Voter (TM). The reality was he was about the only Seattleite we could find who was willing to admit it in public, by name.

    Guess I have to retire that skit now.

    Like

  7. Carol says:

    No Monday post. That means Den reached his destination and is busy with family and friends. ENJOY YOURSELF, Den!!

    Like

  8. Den says:

    OK im stuck without computer internet just this phone yuk! i need to get my Internet back. Carry on?

    Like

  9. Micki says:

    Hello DEN! Nice to hear from you! 😉

    Like

  10. Micki says:

    This is “old news” in the Pacific Northwest – specifically Washington State, but something came up this morning…a friend who lives on Vashon Island is helping to organize a community event there with Katrina Spade the main speaker…so I thought I’d share this.

    Still much controversy surrounding the process…

    Like

  11. David B. Benson says:

    Den, how did the last of your trip go?

    Good to hear from you.

    Like

  12. Den says:

    I finally got back online, the kids’ internet was scrambled and could not log on. Yup missed Monday because of it but we are up and running now. I will go seek a subject for what is left of Tuesday.

    Like

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