Skip to Content

IMBERBE#13: ASTRONOMY QUIZ (RV)

Enjoy, participate and learn from the quiz forum. Post your quiz here for others to enjoy as well

Moderator: RosemaryH

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22199
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Tue Jul 13, 2010 4:36 am

Anyone?
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22199
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Sun Jul 18, 2010 4:00 am

Guess I've stumped the cognoscenti again. :whistle: :whistle: Answer to follow ...
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
Imberbe
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 14480
Joined: Wed Aug 31, 2005 12:28 am
Location: Pretoria, RSA

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby Imberbe » Sun Jul 18, 2010 1:20 pm

18 billion solar masses?
Imberbe = Combretum imberbe = Leadwood = Hardekool = The spirit of the Wildernis!

Want to know more about the SANParks Honorary Rangers? Visit www.sanparksvolunteers.org


One positive deed is worth more than a thousand critical words.

User avatar
Imberbe
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 14480
Joined: Wed Aug 31, 2005 12:28 am
Location: Pretoria, RSA

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby Imberbe » Fri Jul 23, 2010 12:49 am

:popcorn:
Imberbe = Combretum imberbe = Leadwood = Hardekool = The spirit of the Wildernis!

Want to know more about the SANParks Honorary Rangers? Visit www.sanparksvolunteers.org


One positive deed is worth more than a thousand critical words.

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22199
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Fri Jul 23, 2010 2:11 am

You know me and my trickery, don't you! :wink: Remember that 18 billion solar masses, although an incredibly massive black hole (a solar mass is the amount of material in our own Sun), is massive in another way: it is the size of an entire galaxy! Which means that its density is actually very low!

Just thought I'd throw in an interesting, thought-provoking question (after all the cryptic stuff :roll: ).

The answer, actually, is that the centre of certain black holes in fact achieves an infinite density!! No person entering such a black hole could avoid falling into the centre, where he will be crushed into infinite density, his mass being added to that of the black hole. (Of course, he will be crushed long before he reaches the centre, in any case.)

Okay, since Bishop got closest with his cogitating logic, I hand the mantle over to him ...
Bishop, you're IT! :clap: :clap:
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
bishop3006
Senior Virtual Ranger
Senior Virtual Ranger
Posts: 5598
Joined: Thu Nov 06, 2008 4:45 pm
Location: Pretoria

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby bishop3006 » Wed Aug 04, 2010 8:02 am

Apologies, forgot this one a bit.

27 August is to be spectacular. With Mars 6 times closer (closest in almost 60,000 years!) and 85 times brighter than normal, it can only be spectacular. Or is it?

Please explain.
:whistle:

(Edited to fix my language!) :slap:
Last edited by bishop3006 on Wed Aug 04, 2010 8:31 am, edited 1 time in total.
Marius
Hunter, nature lover, conservationist.

I believe that for man to survive, we must work with nature rather than against her. We need the land; the land doesn't need us. Too many people have lost sight of this fact. - Bruce Truter

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22199
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Wed Aug 04, 2010 8:08 am

Super Q, as always, B! :dance:
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22199
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Fri Aug 13, 2010 9:09 am

Okay, let's put this to bed:

Unfortunately, this is a hoax that began back in 2003. On August 27th, 2003, Mars closed to a distance of only 55,758,006 kilometers (34,646,418 miles), which was its closest distance from Earth within the last 50000 years or so (but only by a small amount!)

Now, because some bright spark thought it fun to let the story redo the rounds year after year, the original e-mail from 2003 that was doing the rounds then has been circulating every August thereafter - and probably will suck in gullible people every year for who knows how long!

The original e-mail went something like this:

"The Red Planet is about to be spectacular! This month and next, Earth is catching up with Mars in an encounter that will culminate in the closest approach between the two planets in recorded history. The next time Mars may come this close is in 2287. Due to the way Jupiter's gravity tugs on Mars and perturbs its orbit, astronomers can only be certain that Mars has not come this close to Earth in the Last 5,000 years, but it may be as long as 60,000 years before it happens again.The encounter will culminate on August 27th when Mars comes to within 34,649,589 miles of Earth and will be (next to the moon) the brightest object in the night sky. It will attain a magnitude of -2.9 and will appear 25.11 arc seconds wide. At a modest 75-power magnificationMars will look as large as the full moon to the naked eye. By the end of August when the two planets are closest, Mars will rise at nightfall and reach its highest point in the sky at 12:30 a.m. That's pretty convenient to see something that no human being has seen in recorded history. So, mark your calendar at the beginning of August to see Mars grow progressively brighter and brighter throughout the month. Share this with your children and grandchildren. NO ONE ALIVE TODAY WILL EVER SEE THIS AGAIN."

Now, unfortunately, the Moon only orbits the Earth at a distance of around 385,000 km (240,000 miles). Mars was close in 2003, but it was still 144 times further away than the Moon! Instead of appearing as a huge red globe the size of the moon in the sky, Mars looked like a bright red star. Now, if you use a telescope at about 75-times magnification, the size of Mars in the eyepiece would roughly appear the size of the Full Moon seen with the naked eye!

Opposition - which is when two heavenly bodies reach their closest distance from each other - happens about every 2 years or so between Mars and Earth. And it varies by date: in 2007, it happened on December 18th, and this year it has already occurred on January 29th! In 2018, the opposition will be almost as close as the 2003 event, but Mars will always only appear as a bright red star to the naked eye, not a huge red disc the size of our Moon!
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
bishop3006
Senior Virtual Ranger
Senior Virtual Ranger
Posts: 5598
Joined: Thu Nov 06, 2008 4:45 pm
Location: Pretoria

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby bishop3006 » Fri Aug 13, 2010 9:33 am

:mrgreen: I wondered when you'll succumb and answer the question, OWN! :twisted: Good on you. Hoax it is, and hoax it will be for years to come as wlel, unfortunately. :evil: And people will still be sending it along... :wall: :wall:

You are IT! :thumbs_up:
Marius
Hunter, nature lover, conservationist.

I believe that for man to survive, we must work with nature rather than against her. We need the land; the land doesn't need us. Too many people have lost sight of this fact. - Bruce Truter

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22199
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Fri Aug 13, 2010 9:50 am

I succumbed with pleasure, Bish! Thanks ... BBL ... :thumbs_up:
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22199
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Tue Aug 17, 2010 8:38 am

William Herschel chose a couple of thousand samples of views of the night skies through his telescope, counting the number of stars in each sample! What conclusion did he arrive at based on this work?
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
Timepilot
Junior Virtual Ranger
Junior Virtual Ranger
Posts: 3745
Joined: Tue Jul 29, 2008 2:02 am
Location: Perth, Western Australia

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby Timepilot » Wed Aug 18, 2010 1:44 am

If memory serves, from his star counting Herschel determined the rough shape of the solar system. No further details spring to mind. I do know he set up the NGC (New General Catalogue) system for numbering stellar objects and was the original discoverer of nebulae - but I don't think that's what you are looking for :huh: :tongue:
“ Every year elephants were becoming scarcer and wilder south of the Zambezi, so that it had become impossible to make a living by hunting at all. ” FC Selous 1881

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22199
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Wed Aug 18, 2010 11:42 pm

Your input is always appreciated, TP! You have some excellent memory banks there - Herschel was astronomically involved in several things. The shape of something is on the right rack, but it is not the solar system.
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)

User avatar
Timepilot
Junior Virtual Ranger
Junior Virtual Ranger
Posts: 3745
Joined: Tue Jul 29, 2008 2:02 am
Location: Perth, Western Australia

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby Timepilot » Thu Aug 19, 2010 1:49 am

:wall: :wall: That would be the shape of our galaxy, not the solar system :doh: Did'nt he work out from the star counting that the milky way was elliptically shaped and flattened?
“ Every year elephants were becoming scarcer and wilder south of the Zambezi, so that it had become impossible to make a living by hunting at all. ” FC Selous 1881

User avatar
onewithnature
Distinguished Virtual Ranger
Distinguished Virtual Ranger
Posts: 22199
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Location: Midway between the infinite and the infinitesimal!

Re: IMBERBE#13: ASTRONOMY QUIZ (RV)

Unread postby onewithnature » Thu Aug 19, 2010 8:34 am

TP, well done! :clap: :clap: Yes, Herschel spent aeons of time counting the stars in 2000 samples of views of the skies through his telescope; from this, he deduced that a certain part had much greater density of stars than the others, which suggested that the solar system was in the middle of a giant disk. So, he was the first to discover that our galaxy is disk-shaped. However, it has subsequently been proven that the sun is nowhere near the centre of the galaxy, but towards the outer fringes of the spiral.

TP, you're IT. :thumbs_up:
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)


Return to “Quizzes”