Wouldn't the poles stay brighter consistently? or does the brightness at the poles fluctuate?
If they stay brighter than the equator consistently, then wouldn't that not contribute to the fluctuation? They'd have those patches every time they were observed and something else would have to explain the massive occasional decrease in the light from the star?
Asteroid dubbed the Halloween Skull asteroid zipped by earth today.
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A large space rock resembling a skull narrowly missed Earth shortly after 1 p.m. ET Saturday. NASA says asteroid 2015 TB145 is a "dead" comet that once spewed debris across the solar system. In NASA terminology, that means it has "shed its volatiles" that would produce the visible tail seen on some comets.
It missed Earth by about 300,000 miles (slightly farther away than the moon). The rock, dubbed 2015 TB145, was visible to those with good telescopes.
It's a good thing it missed our planet, though. The asteroid is estimated to be 600 meters wide and traveling at 78,000 mph. By comparison, the meteorite that exploded in the sky over Chelyabinsk, Russia, in 2013 was about 20 meters wide.
It was discovered 3 weeks ago, alarming for how big it was.
For how fast it was going had it hit say in a farmers field near Olds it would have created a crater 5 miles wide and 2000 feet deep.
From Calgary and Red Deer you would have under 2 minutes to get deep underground before the ejecta arrives with 400mph winds. In other words both cities pretty much destroyed.
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we should really invest more in detection satellites. I thought they were really good at catching the big ones and fairly good at the small ones if they're coming at us as they go towards the sun.
Detecting them is one thing, but being able to do anything about it is another. I suppose if it was a devastating one, but not an extinction level event, then you could at least evacuate some people.
If an extinction meteor was heading for Earth, I would rather not even know.
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"A pessimist thinks things can't get any worse. An optimist knows they can."
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Detecting them is one thing, but being able to do anything about it is another. I suppose if it was a devastating one, but not an extinction level event, then you could at least evacuate some people.
If an extinction meteor was heading for Earth, I would rather not even know.
I would want to know where it's heading so I could greet it with open arms. faster that way.
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we should really invest more in detection satellites. I thought they were really good at catching the big ones and fairly good at the small ones if they're coming at us as they go towards the sun.
I read an article this weekend on one of the major news sites (cbc, bloomberg something like that) about the detection systems we currently use. Essentially, the sky is so vast that we can't survey every possible trajectory that an asteroid could come from, but instead focus our efforts on the most likely direction given gravity and orbits etc. Someone far more knowledgeable about astrophysics can probably explain it better.
Interesting thing about the article is that it mentioned that there has been a large amount of planning for dealing with a meteor of significant size on a collision course with Earth. Think Bruce Willis + lasers.
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Pylon on the Edmonton Oilers:
"I am actually more excited for the Oilers game tomorrow than the Flames game. I am praying for multiple jersey tosses. The Oilers are my new favourite team for all the wrong reasons. I hate them so much I love them."
Detecting them is one thing, but being able to do anything about it is another. I suppose if it was a devastating one, but not an extinction level event, then you could at least evacuate some people.
If an extinction meteor was heading for Earth, I would rather not even know.
Yeah, spare me the existential angst please. Plus the inevitable collapse into anarchy would really do a lot to dispel any idealistic notions I hold about my species. I would probably just end up welcoming the asteroid.
Detecting them is one thing, but being able to do anything about it is another. I suppose if it was a devastating one, but not an extinction level event, then you could at least evacuate some people.
If an extinction meteor was heading for Earth, I would rather not even know.
If an extinction meteor was heading for Earth, I fervently hope no one knows (except those who could possibly do something about it), or we'll spend our final days trying to hide from rampaging mobs (or other rampaging mobs, if you're in one).
Remove any fear of retribution or authority, or any belief in protection by authority, and there's a whole lot of ISIL is all of our communities
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Yea it wouldn't be this utopia of doing whatever you want, you would be at the mercy of the masses and if you have facebook or twitter you would know that is a scary thing. That being said, I doubt the mobs would be heading up to the lake so I would probably be fine. Few days of fishing with my family and friends before it all ends seems like a great way to go.
Apparently NASA has some big announcement scheduled for Thursday involving Mars atmosphere:
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NASA will provide details of key science findings from the agency’s ongoing exploration of Mars during a news briefing at 2 p.m. EST on Thursday, Nov. 5 in the James Webb Auditorium at NASA Headquarters in Washington.
__________________ "In brightest day, in blackest night / No evil shall escape my sight / Let those who worship evil's might / Beware my power, Green Lantern's light!"
Man develops cancer he "caught" from the tapeworm that had cancer. Many contributing factors such as the man being HIV positive and not taking meds so his immune system was compromised severely but it seems to be the first documented case of a human becoming sick from cancer cells form another organism.
Yeah, spare me the existential angst please. Plus the inevitable collapse into anarchy would really do a lot to dispel any idealistic notions I hold about my species. I would probably just end up welcoming the asteroid.
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Quote:
Originally Posted by snipetype
k im just not going to respond to your #### anymore because i have better things to do like #### my model girlfriend rather then try to convince people like you of commonly held hockey knowledge.
Yea it wouldn't be this utopia of doing whatever you want, you would be at the mercy of the masses and if you have facebook or twitter you would know that is a scary thing. That being said, I doubt the mobs would be heading up to the lake so I would probably be fine. Few days of fishing with my family and friends before it all ends seems like a great way to go.
Apparently NASA has some big announcement scheduled for Thursday involving Mars atmosphere:
More and more articles claiming that they will announce that they've figured out how Mars went from habitable to what it is now... I thought they already knew it was cause the core stopped spinning and lost its magnetic field.
NASA just saw something come out of a black hole for the first time ever
Wait I thought nothing, not even light, could escape a black hole's gravitational pull??
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NASA just spotted something mighty strange at the supermassive black hole Markarian 335.
Two of NASA’s space telescopes, including the Nuclear Spectroscopic Telescope Array (NuSTAR), miraculously observed a black hole’s corona “launched” away from the supermassive black hole. Then a massive pulse of X-ray energy spewed out. So, what exactly happened? That’s what scientists are trying to figure out now.
The baffling and strange behaviours of black holes have become somewhat less mysterious recently, with new observations from NASA’s Explorer missions Swift and the Nuclear Spectroscopic Telescope Array, or NuSTAR. The two space telescopes caught a supermassive black hole in the midst of a giant eruption of X-ray light, helping astronomers address an ongoing puzzle: How do supermassive black holes flare?
