Asteroid Strikes 'Increase Threefold Over Last 300 Million Years,' Survey Finds (theguardian.com)
According to a survey of asteroid craters at least 6.2 miles wide, the number of asteroids slamming into Earth has nearly tripled since the dinosaurs first roamed. "Researchers worked out the rate of asteroid strikes on the moon and the Earth and found that in the past 290 million years the number of collisions had increased dramatically," reports The Guardian. "Before that time, the planet suffered an asteroid strike about once every 3 million years, but since then the rate has risen to once nearly every 1 million years." From the report: The findings suggest that the dinosaurs may have been unfortunate in evolving 240 million years ago, just as the odds of being wiped out by a stray asteroid were ramping up. It was one of those impacts, on top of other factors, that did for the beasts 66 million years ago. Many scientists had assumed that asteroid strikes were a rare but constant threat in Earth's deep history, but the latest study challenges that belief.
Writing in the journal Science, the researchers describe how they turned to the moon to examine the violent history of Earth. The Earth and moon are hit by asteroids with similar frequency, but impact craters on Earth are often erased or obscured by erosion and the shifting continents which churn up the crust. On the geologically inactive moon, impact craters are preserved almost indefinitely, making them easier to examine. Using images from Nasa's Lunar Reconnaissance Orbiter, the scientists studied the "rockiness" of the debris surrounding craters on the moon. Rocks thrown up by asteroid impacts are steadily ground down by the constant rain of micrometeorites that pours down on the moon. This means the state of the rocks around a crater can be used to date it. The dates revealed that the moon, and by extension the Earth, has suffered more intense asteroid bombardment in the past 290 million years than at any time in the previous billion. On Earth there are hardly any impact craters older than 650 million years, most likely because they were eroded when the planet became encased in ice in an event known as Snowball Earth.
Writing in the journal Science, the researchers describe how they turned to the moon to examine the violent history of Earth. The Earth and moon are hit by asteroids with similar frequency, but impact craters on Earth are often erased or obscured by erosion and the shifting continents which churn up the crust. On the geologically inactive moon, impact craters are preserved almost indefinitely, making them easier to examine. Using images from Nasa's Lunar Reconnaissance Orbiter, the scientists studied the "rockiness" of the debris surrounding craters on the moon. Rocks thrown up by asteroid impacts are steadily ground down by the constant rain of micrometeorites that pours down on the moon. This means the state of the rocks around a crater can be used to date it. The dates revealed that the moon, and by extension the Earth, has suffered more intense asteroid bombardment in the past 290 million years than at any time in the previous billion. On Earth there are hardly any impact craters older than 650 million years, most likely because they were eroded when the planet became encased in ice in an event known as Snowball Earth.
Seems to me that the cloud of debris that surrounds our solar system (and likely most others as well) would be unstable as stars pass by each other.
"His name was James Damore."
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Global Asteroiding is fake news! Those craters were made by Rosie O'Donnell, NOT space rocks! I had Space Force check them out, CNN lied through their black hole. The Kuiper Belt is not sending their best rocks our way anyhow, believe me! Build a gas giant between Mars and here to keep those shit-stones out, and make Saturn pay for it! Saturnites have a bigly gold ring, they can afford it. I'm an expert on gas giants, believe me! I'm terrific at gas, everyone knows it. Voted #MostGaseousEver! Get a clue from my bigly stones and Make Craters Great Again!
- Orangebot AI test #53
How do we *know* the rate of micrometeorite bombardment is constant and hasn't dropped in intensity by a third in recent (geological/selenological) times?
I don't subscribe to RMS's GNUtopian vision.
Just another sign that we are destroying the galaxy by by burning so much dilithium crystal.
Weâ(TM)ll survive this one. Just donâ(TM)t be a dinosaur. Everyone have a fallout shelter underground too. We could easily have an asteroid warning system that could give us at least a day or two warning â"- enough time to head underground.
See subject: Set me up w/ NASA (whatever) to setup a forcefield for earth (not like you think)? I'll do an APK Hosts Engine (might as well - I give all online freaks more speed (warp) & protection (deflectors) in 1 pass after all for less + natively) for this puny annoyance!
* Why?
(Because I can)
APK
P.S.=> Can't you? apk
Governments must have the means to combat asteroid growth.
Maw! Fire up the karma burner!
It’s because the planet is bigger!
https://youtu.be/oJfBSc6e7QQ
That's a bit of a stretch, but trump is one of the major threats to human extinction.
So what you are calling for is human extinction? Cant have any threats to it?
You sound like those Christians yearning for Armageddon.
"His name was James Damore."
Mike Pence?
Same increase for single-blade left-hand bi-sex shavers of blue cockatoo plumes. Ain't it a coincidence? WTF.
Evidence of 300 million year old asteroid craters is many times more likely to have been destroyed. Other scientific papers have pointed to a much more chaotic solar system earlier in its history, so the trend may in fact be in the opposite direction, just the evidence no longer exists.
No, no, no. You have the culprit right, but the fix is clearly higher taxes. That's one of the three universal fixes:
1. If it's stuck and has to move: WD-40
2. If it moves and needs to be fixed: Ductape
3. If it has the word 'climate' in it: Tax!
To Terminate, or not to Terminate, that's the question - SCSIROB
CO2 exerts more gravity than N2 or O2, and therefore attracts more asteroids towards Earth. Duh...
Everybody PANIC!!!!!
Who do you think is the reading audience here, that they would be so badly thrown off by using km? I think /. readers are smarter than that.
--
.nosig
A good asteroid strike would only benefit the planet earth.
1656
Probably major collisions between moons produces an increase in asteroid impacts for millions of years afterwards, until gravity eventually clears out the debris.
I've abandoned my search for truth; now I'm just looking for some useful delusions.
I don't believe it. In my more than half century of life I've never heard of the -fold suffix being used in the way you describe, and quick search only turns up references (including a Wikipedia page) that equate it with "times". If you have any source for your assertion, I'd like to see that.
Maybe the zone the solar system is currently traversing is quite gravitationally bumpy to disturb the asteroids trajectories toward the sun.
Has anyone tied this, snowball earth and the great nonconformity together? the eons roughly match.
You sound like those Christians yearning for Armageddon.
They haven't learned their lesson from 1998? What good will a remake do?
Ezekiel 23:20
Sociopaths, we call them, and there seem to be a lot of them about recently. Of course, they are also idiots if they think a single politician can somehow destroy the most adaptive species every to arise. That also has a name, Trump Derangement Syndrome.
Somehow it must be due to climate change. I know this because every other post to Slashdot that has do to with some change of our environment (i.e. the Earth's ecosystem of which extraterrestrial influences are a critical component (for example, the sun)) is because of climate change. There has to be some "scientist" somewhere that can pull together a correlation....especially if they think they can get publicity and funding.
Just saying...
GayPK needs to stop with the stupid commentary. I tried his host file engine it doens't work as I keep seeing gay ads for it. Its creator is mentally defective.
I didn't even know there was a union.
Have gnu, will travel.
Your software is just fine - well written, functional... I'm going to continue using the Host File Engine by mmell February 17, 2017
Your premise that hostfiles are a good way to deal with advertising and malvertising is quite valid - by JazzLad April 20, 2016
his hosts program is actually pretty good by xenotransplant August 10 2015
his hosts tool is actually useful for those cases in which one does indeed want to locally block stuff outright while consuming minimum system resources by alexgieg September 25 2015
I like your host file system by Karmashock September 09 2015
that APK guy, I use his host file by rogoshen1 Tuesday March 03, 2015
I personally use a HOSTS file blocker produced from a genius called APK by 110010001000 October 27 2017
* For the Win32/64 model...
APK
P.S.=> Linux model's faster/more efficient/better MERGE feature too - More coming... apk
Apk has the answer for that - really... kill automatic updates by adding a hosts file entry setting updates.steam.com or whatever to 127.0.0.1. You have to find the right hostname for each software you want to block updates on by raymorris (2726007) on Friday July 06, 2018
APK your posts on this and the hosts file posts, and more, have never been in error and/or bad advice by BlueStrat (756137) on Wednesday June 21, 2017
I support APK's stand on the hosts file and can't see why it's not used more than it is. My hosts file is 144247 lines long (4,332 Kb) it & a firewall serves me very well - by Trax3001BBS (2368736)
ABP is insufficient as a solid hosts file does everything APK reminds us about fast turtle September 17 2013
You need APK's hosts file - by Teun (17872) on Wednesday August 06, 2014
* For the Win32/64 model...
APK
P.S.=> Linux model's faster/more efficient + BETTER merge feature - More coming... apk
APK is totally right on this count. Adblock Plus on Firefox mobile is a dog on older, or lower end, phones. A hostfile based adblocker makes for a much better experience in this context. Of course, your phone has to be rooted, which isn't the case with Firefox + adblock." - by chihowa on Saturday May 16, 2015
APK solution STILL relevant Thud457 June 11 2015
In a footnote, I would like to note that I find your hosts file admirable - by vel-ex-tech (4337079) on Tuesday November 24, 2015
APK's monolithic hosts file is looking pretty good at the moment - by Culture20 on Thursday November 17
you're right about hosts files - by drinkypoo (153816) on Thursday May 26
APK, I know people give you a lot of shit regarding hosts, but please don't ever stop - by nasredin (958927) on Friday June 12, 2015 @03:34PM
* For the Win32/64 model...
APK
P.S.=> Linux model's faster/more efficient + BETTER merge feature - More coming... apk
APK is kinda right... I've given up on JS based adblocking and gone to blackholing in /etc/hosts, just like it was back in the 90s. The computational load has gotten intolerable for any ad-blocking using JS. I've tried his hosts file generating software. It works. - by bmo (77928) on Thursday October 15, 2015
get around to 'installing' a hosts file list, not sure which one, likely the one from someonewhocares.org. If it works as well as what I used for a while about ten years ago, I'll be happy. And grateful to APK for the lesson and the reminder. - by kermidge (2221646) on Wednesday March 27
I actually went and downloaded a 16k line hosts file and started using that after seeing that post, you know just for trying it out. some sites load up faster. - by gl4ss (559668) on Thursday November 17
dammit MS, you proved APK right about something by lgw
* For the Win32/64 model...
APK
P.S.=> Linux model's faster/more efficient + BETTER merge feature - More coming... apk
(APK) is still right a hosts file really does work. It even blocked a some of the video ads that were inserted into a stream OrangeTide February 10 2016
the Host File Engine performs exactly as promised - by mmell (832646) on Thursday February 16, 2017
I do use APK's host file on all my systems at home by OrangeTide December 01 2017
I've never tried to belittle (APK's work), I've flat out said it's good - by BronsCon (927697) on Thursday February 11, 2016 @06:48PM (#51491263)
(Toss on 100,000++ users worldwide too!)
* For the Win32/64 model...
APK
P.S.=> Linux model's faster/more efficient + BETTER merge feature... apk
See subject & results in https://tech.slashdot.org/comm... https://yro.slashdot.org/comme... https://it.slashdot.org/commen... https://linux.slashdot.org/com... https://news.slashdot.org/comm... https://apple.slashdot.org/com... https://it.slashdot.org/commen... https://it.slashdot.org/commen... https://it.slashdot.org/commen... https://it.slashdot.org/commen... https://it.slashdot.org/commen... https://it.slashdot.org/commen... https://search.slashdot.org/co... https://it.slashdot.org/commen... https://it.slashdot.org/commen... https://tech.slashdot.org/comm... https://tech.slashdot.org/comm... https://apple.slashdot.org/com... https://tech.slashdot.org/comm...
* That's only recently while I've been on Linux (July 2018) & 100's of times vs. MANY other botnets/malwares etc. in the past circa 2006-early 2018 while I was on Windows: CONCRETE VISIBLE UNDENIABLE REALITY (see those links as proof). ... & that's ONLY what /. reported on (there are FAR more)
APK
P.S.=> "It's working: Neville... it's working!" - "I AM LEGEND"... apk
"classic Windows hosts trick to block the Coinhive or Crypto-Loot domains" - https://www.bleepingcomputer.com/news/security/a-new-player-joins-coinhive-on-the-browser-cryptojacking-scene/ - BLEEPING COMPUTER
ZD NET http://www.zdnet.com/article/how-to-use-a-hosts-file-to-improve-your-internet-experience/ "Hosts files really shine by letting you block ads, spyware sites, malware sites, & tracking sites"
SANS ("A related approach to the DNS issue is to create a hosts file on each system that sends requests for spyware to some place else" hosts by myself & RAMU right @ START of "malware explosion" mid 2005 on) https://isc.sans.edu/forums/di...
Aryeh Goretsky/ESET/NOD32: hosts = good security https://it.slashdot.org/comments.pl?sid=7442373&.cid=49747129/
Oliver Day (SYMANTEC/SECURITYFOCUS) http://www.securityfocus.com/columnists/491/
Spybot S&D uses hosts.
APK
P.S.=> Malwarebytes' hpHosts hosts & RECOMMENDS my program forum.hosts-file.net/viewtopic.php?f=5&t=4290
Who did it 1st: China or me? I did - dates are my proof https://theregister.co.uk/2017... w/ the FACT China rampantly STEALS U.S. Intellectual properties & military secrets!
* IMITATION truly IS the SINCEREST FORM of FLATTERY!!!
(... & proves hosts work vs. DNS faults in tracking you via dns request logs (since you avoid it & resolve FASTER locally using hosts) + DNS being downed OR Kaminsky REDIRECT security flaw misdirected poisoned (or vs. DNSChanger))
ESPECIALLY AS I DISCOVERED MODEMS CHINA MAKES EVEN YOUR ISP CAN'T GET INTO FOR DNS CHANGE (but China can) https://slashdot.org/comments....
APK
P.S.=> Folks, It's NOT EASY being "World-Class" like me (lol - 100,000++ users prove it for me) - enjoy the fruits of my labors for FREE + going FASTER/SAFER/MORE RELIABLY online (w/ a bit more anonymity too via my program)... apk
What else could it be?
"Consensus" in science is _always_ a political construct.
The bugs are getting more accurate. They have been lobbing asteroids at us for millions of years but for a long time, they weren't very good at it.