whew...(wipes brow)....another near miss...

[ramblingboy42]

yesterday , a small lump of rock around 10m in dia whizzed past us between the moon and our earth at 56,200km/h

just imagine ...if it was just a small part of 1 degree different in it's trajectory....

there'd be no toilet paper left on earth, because everyone would have **** themselves

[BradC]

It might be 10M out there, but how big would it be by the time it hits the deck?

[ramblingboy42]

I dunno, I assume 10m, do you have a theory on this?

[V8Ian]

I doubt it'd be 10mm, most of it would burn up, due to friction, upon entering the atmosphere.

[ramblingboy42]

Yes, another one just whizzed by , closer to Earth than to the Moon.

A "potentially hazardous asteroid" known as 2020FL2 , 21mtrs in dia , just blasted past Monday at 73,000kmh.

If it hit it would be seriously 'night Al , night Tec' , for us all.

They never tell us in advance that an asteroid could possibly collide......that would create more panic buying than covid19 , you would really need the toilet paper.

[RANDLOVER]

Missed that one, although I pro'ly wouldn't see it if it didn't have some burn time in the earth's atmosphere. I do often see the satellites go over my house, some of them even seem to flare, not sure why.

[JDNSW]

Missed that one, although I pro'ly wouldn't see it if it didn't have some burn time in the earth's atmosphere. I do often see the satellites go over my house, some of them even seem to flare, not sure why.

A lot of satellites have highly reflective surfaces on them for temperature stabilisation, and these can reflect sunlight very brightly, but only when it is at the right angle relative to you, the satellite and the sun. Visualise the flash you can get from a flat windscreen when driving and the setting or rising sun is just at the right angle. Most times it will be as the angle changes with the position of the satellite, but some may be because the satellite is tumbling.

[ramblingboy42]

It's called Iridium flare.

If you goto Heavens Above www.heavensabove.com you can look up Iridium flares and see them in daylight.

[RANDLOVER]

It's called Iridium flare.

If you goto Heavens Above www.heavensabove.com (http://www.heavensabove.com) you can look up Iridium flares and see them in daylight.

I think you mean Heavens-Above (https://heavens-above.com/main.aspx) with a dash, the way you have it may be an adults only site as my computer complained!

[Scouse]

Ramblings link works for me.

[ramblingboy42]

...It's a dam good thing they missed.

But not by much.

In the last 5 days we have had 4 asteroids whiz past us between Earth and Moon and one this morning incredibly close ......0.3 of a lunar distance , that's less than one third of the distance between us and the moon.

you can see it all on SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids (http://www.spaceweather.com)

[JDNSW]

I think it is reasonable to assume this has always been happening - just that it has only recently that we have been in a position to detect it!

[bob10]

Great. Something else to worry about. I put it into my favourites for a later time, I'm all crises'd out at the moment. [ think I invented a new word. [tonguewink]]

[JDNSW]

I think you have too - maybe it should be "crisis'd"?

[Saitch]

I think it is reasonable to assume this has always been happening - just that it has only recently that we have been in a position to detect it!

I reckon you're right JD. Some technology is good![smilebigeye]



https://youtu.be/k7dtYsoUlnc

[ramblingboy42]

Well, those impacts didnt seem to bother the moon or dig another ocean.

so in effect all you worry warts have really nothing to worry about......unless a 15m asteroid lands on your house

[Saitch]

Well, those impacts didnt seem to bother the moon or dig another ocean.

so in effect all you worry warts have really nothing to worry about......unless a 15m asteroid lands on your house

C'mon, RB, you're just being silly! The odds of that happening are astronomical.

[Ancient Mariner]

Well, those impacts didnt seem to bother the moon or dig another ocean.

so in effect all you worry warts have really nothing to worry about......unless a 15m asteroid lands on your house. Bring it on. That will show the virus who's the boss [thumbsupbig]

[ramblingboy42]

C'mon, RB, you're just being silly! The odds of that happening are astronomical.

at least you didn't say biblical proportions....I ****ing hate that

[Saitch]

at least you didn't say biblical proportions....I ****ing hate that

Wouldn't have been in context.

[DiscoMick]

What about Wolff Creek?

[bob10]

That's nothing. Really want something to worry about? Try a death Star. [ cue the Star Wars music]

Did a Death Star take out a planet for real? Something did (https://thenewdaily.com.au/life/science/2020/04/26/death-star-return-planet/?utm_source=Adestra&utm_medium=email&utm_campaign=Morning%20News%20-%2020200427)

[ramblingboy42]

What about Wolff Creek?

sounds good to me.

I'm planning a trip there.

I believe you are not allowed to walk in the actual crater.....who monitors or controls that.

Gonna be a big trip, because from there Broome and committed to a great circle.

[bob10]

It seems these things are meteoroids when outside the Earth'a atmosphere, a meteor while passing thru the atmosphere, and meteorite when what remains hits the Earth.

Archivists Find the Oldest Record of Human Death by Meteorite
|
Smart News

| Smithsonian Magazine (https://www.smithsonianmag.com/smart-news/murderous-meteorite-discovered-archivists-turkey-180974741/?utm_source=smithsoniandaily&utm_medium=email&utm_campaign=20200427-daily-responsive&spMailingID=42370213&spUserID=ODU1Njc2OTEyODIyS0&spJobID=1742860880&spReportId=MTc0Mjg2MDg4MAS2)

[bob10]

Wolf Creek. You can walk to the top , but it is considered dangerous to climb into it.

Wolfe Creek Crater | Explore Parks WA | Parks and Wildlife Service (https://parks.dpaw.wa.gov.au/park/wolfe-creek-crater)

[bob10]

The most detailed map of the moon to date. Check out the far side.Earth has been lucky it was there, more than once.

Gorgeous New Map of the Moon Is Most Detailed to Date
|
Smart News

| Smithsonian Magazine (https://www.smithsonianmag.com/smart-news/gorgeous-new-map-moon-most-detailed-rendering-date-180974751/?utm_source=smithsoniandaily&utm_medium=email&utm_campaign=20200427-daily-responsive&spMailingID=42370213&spUserID=ODU1Njc2OTEyODIyS0&spJobID=1742860880&spReportId=MTc0Mjg2MDg4MAS2)


USGS Releases First-Ever Comprehensive Geologic Map of the Moon (https://www.usgs.gov/news/usgs-releases-first-ever-comprehensive-geologic-map-moon) Go full screen on the video. Cool.

[JDNSW]

It seems these things are meteoroids when outside the Earth'a atmosphere, a meteor while passing thru the atmosphere, and meteorite when what remains hits the Earth.
.......

The word "meteor" originally meant any atmospheric phenomenon (1471), and is the origin of meteorology for the study of weather. It did not become (almost) exclusively used for what we cal meteors until the nineteenth century. Meteorite was coined in 1834, and displaced meteorolite (1802) which had the same meaning. Meteoroid dates to 1865. (Thanks Mr Oxford)

[Saitch]

The suffix 'oid' means 'Resembling', as in 'Planetoid', 'Alkaloid' etc. so, from that, I could assume a meteoroid would be something that is meteor-like but not quite the real deal. Dunno!

[ramblingboy42]

Wolf Creek. You can walk to the top , but it is considered dangerous to climb into it.

Wolfe Creek Crater | Explore Parks WA | Parks and Wildlife Service (https://parks.dpaw.wa.gov.au/park/wolfe-creek-crater)

yeah I read that article.

funny ,
theres parts of the Flinders Ranges which are really dangerous to access but no one says you can't.

[Saitch]

yeah I read that article.

funny ,
theres parts of the Flinders Ranges which are really dangerous to access but no one says you can't.

Oooooooh, goody!! Do I detect the genesis of a conspiracy theory here? [biggrin]

[V8Ian]

Lasseter's reef is really in the crater. Mr. L should have availed himself the services of a bright, young chainman from Kallangur.

[ramblingboy42]

Guess I'll have to take a metal detector

[V8Ian]

Don't forget who told you, Dennis. [wink11]

[ramblingboy42]

sure , is 10% ok?

[ramblingboy42]

what was that guy's name who drove the blue F100?

[Saitch]

This bloke?
160269

[V8Ian]

This bloke?
160269
Is he a chainman?

[Saitch]

Nah, he could afford spotties.

[bob10]

The word "meteor" originally meant any atmospheric phenomenon (1471), and is the origin of meteorology for the study of weather. It did not become (almost) exclusively used for what we cal meteors until the nineteenth century. Meteorite was coined in 1834, and displaced meteorolite (1802) which had the same meaning. Meteoroid dates to 1865. (Thanks Mr Oxford)


This should clear it up. From N.A.S.A.

Asteroid or Meteor: What's the Difference? | NASA Space Place – NASA Science for Kids (https://spaceplace.nasa.gov/asteroid-or-meteor/en/)

[bob10]

yeah I read that article.

funny ,
theres parts of the Flinders Ranges which are really dangerous to access but no one says you can't.

Depends on who would be held responsible if you injured yourself.

[Saitch]

https://www.facebook.com/ABCScience/videos/275688746932794

[V8Ian]

Thank-you for that re-assurance Saitch. [bighmmm]

[bob10]

Don't worry about those little rocks, a black hole has been found close to Earth. Well 1,000 light years away, but close enough.


Closest Black Hole to Earth Discovered
|
Science

| Smithsonian Magazine (https://www.smithsonianmag.com/science-nature/closest-black-hole-180974815/?utm_source=smithsoniandaily&utm_medium=email&utm_campaign=20200506-daily-responsive&spMailingID=42441730&spUserID=ODU1Njc2OTEyODIyS0&spJobID=1760560593&spReportId=MTc2MDU2MDU5MwS2)

[ramblingboy42]

there were 3 more last week.....duck hunt

[bob10]

Another asteroid this weekend, far enough away to not get too concerned.

Comet me, bro: A giant asteroid will come 'relatively close' to Earth (https://thenewdaily.com.au/news/2020/06/04/asteroid-nn4/?utm_source=Adestra&utm_medium=email&utm_campaign=Morning%20News%20-%2020200605)

[ramblingboy42]

The big ones never seem to come close......always the piddlers.