A favour required please - of a quiz nature

ok then if was all brought back to earth it would way 3000 ton

I was guessing 3000 Heed. Was that right?

No Idea Pumph.

i have no idea

Matt Monro (1 December 1930 7 February 1985) was an English singer

Tallest Volcano on Venus apparently
Glad to see your getting the help you need.

does inner planet mean mercury, venus, earth and mars? if so....

q Which inner planet has the smallest axial tilt?

MAAT MOONS could have been his scottish cousin

Yes it's VERY helpful, mate.

Wasn't Matt Munro a bus conductor before he took up singing?

Venus, Steet.

and Yes it does.

Mercury according to wiki study

OK Pos, I'll look that up too. Ta.

q Name any of the three spacecraft orbiting Mars

Dunno the spacecraft names, it was on my research list for tomorrow.

what are they?

q What is the escape velocity for planet earth?

I cant find anything on weights but its estimated to be around 1 million pieces of junk floating about out there with all of them bar 9000 the size of tennis balls or less. Varies from article to article of what is out there.

Mars is currently host to three functional orbiting spacecraft: Mars Odyssey, Mars Express, and the Mars Reconnaissance Orbiter.

in MPH or numbers of G, rob?

apparently a tiny fleck of paint hitting a satellite or spacecraft is enough to cause serious damage at the speeds things go at outthere.

Which is the only known planet, apart from Earth, where a magnetic compass would work?

I have kph, bt I suppose mph is ok.

Didn't think you could give it in g. g is acceleration not velocity i thought.

I think these number ones are a little unfair - or they at least have to say how close you need to be. all these figueres will have been calculated to 10s or 100s of decimal places i'm sure.

about 7,000 MPH rob? I'm really not sure.

Galli, Is it Mercury?

Yes, well done.

11.186 km/s = about 40000km/hr i think.

so 24000ish mph

good q gall

11 km/s, I was thinking 11,000 kph.

I'll remember that too!

would be a bit unfair if theytry and bombard you with a numbers question. certainly not without certain parameters.

What are the 3 most common gases in the martian atmosphere? in order if you can.

Probably, but I have no idea what sort of Q it could be. Just that it'll be hard.

CO2, Nitogen and Oxygen?

Depends how much you want to learn, and how accurately. could do:

relative diameters, densities, lengths of days, years. axis tilts, escape velocity, surface temp

that would be 7 x 4 = 28. i suppose that is quite doable to say two decimal places.

volumes and masses and surface area could be derived i suppose.

C02 95%
nitrgen 2.7
argon 1.6
oxygen 0.2.

nearly there mate.

Not entirely unlike Earth, (except for the proportions)

I reckon I could do with you as a coach, rob.

I'm going to read and re-read this thread. Also I have a set of cassettes to listen to, from the library - one for each planet -tells all sorts of things, from fact to myth and story. Add to this the looking at random stuff online, and another look at the universe today site.

All by Wednesday!

Also, I do know some of it.

Again - Thanks everyone for your help

What is the name of the hypothetical planet (never found) that was believed to orbit between Mercury and the sun?

last one then i'm off study:

The largest what, on Mars, is named after italian astronomer Giovanni Schiaparelli?

Think earth is 80% nitrogen, 19% oxygen, 0.01% CO2.

yep argon comes between co2 and oxygen

Galli, I dunno :(

Pos, I think it's 0.1% (or so) CO2 on earth and 0.025% Argon, but I need to check this.
Is the answer 'Canali'

Good luck again for thursday SF

Vulcan. They thought it had to exist until Einstein proved that Mercury's funny orbit didn't need an extra planet to explain it.

VG Stuff, Gallivanter. I have heard of vulcan, didn't know the Einstein stuff tho.

Thanks all, I'll look in again later

^
for any overnighters.

I'll have a look in the morning.
Cheers again. This has been most useful.

Fill in the missing name

n July of 1965, ? ? transmitted 22 close-up pictures of Mars

Missed this :(

First question is wrong.

what is the revolution period of Mercury(in earthdays)

It spins on it axis every 115 days, the orbital period (ie around the Sun is 88 days)
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1.Which spacecraft is currently en route to Mecury having made successful flyby's of the Earth, Venus and Mercury itself?

2.Which asteroid orbiting the Sun but in resonance with the Earth's orbit has been described as Earth's second Moon?

(I only discovered this when I asked a Q on The Naked Scientist, its a very interesting subject)

3.Which Martian lander landed in the polar region on 25th May 2008?

4.What is the name of the Canyon on Mars which is the longest in the Solar System?

5.Because of the discrepancies in Mercury's orbit, it was felt there was a planet orbiting even closer to the Sun. Can you name it?

6.Which spacecraft made the first successful flyby of the planet Mars?

7.Which Italian scientist once described "canali" on Mars meaning channel or grooves that was subsequently translated by Percivel Lowell as Canals?

8.How many times more massive is the Earth than Mars?

9.Which, by size, is the third largest known asteroid in the Asteroid belt?

10. What was the name of the last Astronaut to walk on the Moon
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Answers below

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1.Which spacecraft is currently en route to Mecury having made successful flyby's of the Earth, Venus and Mercury itself?

2.Which asteroid orbiting the Sun but in resonance with the Earth's orbit has been described as Earth's second Moon?

(I only discovered this when I asked a Q on The Naked Scientist, its a very interesting subject)

3.Which Martian lander landed in the polar region on 25th May 2008?

4.What is the name of the Canyon on Mars which is the longest in the Solar System?

5.Because of the discrepancies in Mercury's orbit, it was felt there was a planet orbiting even closer to the Sun. Can you name it?

6.Which spacecraft made the first successful flyby of the planet Mars?

7.Which Italian scientist once described "canali" on Mars meaning channel or grooves that was subsequently translated by Percivel Lowell as Canals?

8.How many times more massive is the Earth than Mars?

9.Which, by size, is the third largest known asteroid in the Asteroid belt?

10. What was the name of the last Astronaut to walk on the Moon
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ANSWERS BELOW
























































































Messenger
Cruithne
Phoenix
Marinaris (Mariner)
Mariner 4
Vulcan
Giovanni Schiaparelli
10
Pallas
Eugene Cernan

Ovalman.. I think you've got answers 5 & 6 the wrong way around

Study, I just noticed December's issue of Sky at Night Magazine has a big quiz in it, if you want, I could read the questions out that would apply to you.

ie Q1. The Mars rovers Spirit and Opportunity celebrated 6 years on the Martian surface in January 2010. What was the name of the crater that Spirit landed in?

Yes Paulie, made a mistake sorry.

Mariner 4, Pumph?

Fantastic stuff, Oval.
That would be helpful. I'm having a cramming day today. I think I'm in definite need of this thread.

Just checked, there's around 100 questions but very few on the Inner Solar System. I'll print what I see.

thanks.

1)Fill in the brackets........The Soviet (name the probe) probe crash-landed on (which planet) on March 1, 1966. It was the first man-made object to enter the atmosphere and strike the surface of another planet

Dunno and mars. PW

Morning Study, is this for an audition or an actual show?

Actual show Baggs.

Is it junior mastermind? :D

Venera 3 (sounds itchy), and Venus

I'd have more chance if it was :)

:D

2)What diameter is
a) Mercury
b) Venus
c) Earth
d) Mars

I've heard of that, Al. Thanks.

If the question (should I get it) isn't covered in this thread, I'll be amazed.

a) Mercury 3.250
b) Venus 7,580
c) Earth 7,960
d) Mars 4,300

all miles, all nearish and all a bit wrong, I think ;)

Pretty damn close imo
a 3029 miles
b 7521 miles
c 7926 miles
d 4221 miles

To 2 decimal places, what is the sum of the sqaure root of Mercury's apoapsis and the difference between Earth's perihelion and the amount of seconds in Mars' solar day?

1. In June 2009 a Japanese lunar orbiter SELENE (nicknamed Kaguya) was crash landed into the Moon to end its mission. But what does the crafts nickname refer to?

2.Which of the following is not a lunar sea?

a) Mare Ingenii
b) Mare Caseus
c) Mare Moscoviense
d) Mare Frigoris

3. In which lunar sea would you find the carter Carlini?

4. What is the largest meteorite found on the Earth called?

5. If you stood on Caloris Basin, where would you be?

6. Where might you find the feature Rupes Recta?

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From the same mag in a crossword, I don't have the answers to these but I could guess them.

7. What is the latin name for the Moon (4)?

8. Early Russian probe sent to the Moon(5)?

9. Type of rock found on the Moon(6)?
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Answers

1. A princess in a Japanese story
2. b
3. Mare Imbrium
4. Hoba West Meteorite
5. Mercury
6. Moon (I've never heard of this feature)
7. Luna
8. Luna2,3,4,5 ect (its a crossword)
9. Thought of Regolith but I think the answer is Basalt.

I knew none of those!! (except luna) :(

I thought I was up on this. I will be by the time I've read and learned the stuff on this thread!

1.The transit of Venus last occurred in June 2004 but in what year will the next one occur?

2. The United States' first probe to Venus in July 1962 failed on launch but can you name it?

3. The Russian spacecraft Venera-Gallei to Venus is more popularly known by which name?

4. Which country proposed a manned spacecraft flyby of Venus in the Early 1960's but was later cancelled?

5. What gas is the major constituent on the atmosphere of Venus?
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Answers










































2012
Mariner 1
Vega
USA
Carbon Dioxide
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I'll throw more up later

So will Study... you're making him nervous

:^0

VG - and possibly near the mark, PW.

Right.
Most of the information in this thread has been absorbed - Thanks.

Any more?

What's the capital of Venus?

Ok ok What is the name of the largest crater on Mercury?

V and dunno :(

The largest known craters are Caloris Basin, with a diameter of 1,550 km,[38] and the Skinakas Basin with an outer-ring diameter of 2,300 km.[39] The impact that created the Caloris Basin was so powerful that it caused lava eruptions and left a concentric ring over 2 km tall surrounding the impact crater. At the antipode of the Caloris Basin is a large region of unusual, hilly terrain known as the "Weird Terrain".

Ah, yes I remember seeing animations of that. It got hit so hard by a meteor that it pushed up mountains on the opposite side of the planet!

SF what's the difference between Rotation period and Solar day?
They sound like the same thing to me but in some planets, mercury eg, they're vastly different?

Mercury turns quite slowly on it's axis (about once every 113 days, and venus every 243 days - [subject to being checked :) ]), but it circles the sun every 88 days, so it's turning as it goes round the sun - in the same direction - so the day and night are each about 8 months long. If it wasn't orbiting the sun it would be 113 days long.

A bit like the moon - which turns on its axis in the same amount of time it orbits the earth, so we never get to see the other side of it.

Get 2 coins. put one on the table, put the other in orbit around it, say one orbit every 10 seconds. Now spin the orbiting coin slowly as you move it, (maybe put a little mark on the edge).

so is it just coincidence that earths rotation period = its solar day ??

Don't dig a hole Paulie :0

Didn't realise I was Oval... anyhooo.. lets find another Q for me ole mucker

Its maybe not a stupid question as I can't think of an easy way to explain the answer.

I'll look it up when I get time :)

SF What is Venus's average distance from the sun?
In AU and miles or km please

I think we have a sort of average rotation and spin, PW - the inner planets spin really slowly, but revolve around the sun in quick time, ...... and.... I'll let Oval explain :)

I don't know the AU, but it's about 67,000 miles.

Ok lol thanks, and yes... which is 0.7 AU

I've thought of a way..... we spin round 365 times to every revolution of the sun, so it's like comparatively standing still, whereas Mercury spins once every year and a 1/2 (Mercury years).

The Moon both spins and orbits once every 28 days !

From wiki:
The rotation period of an astronomical object is the time it takes to complete one revolution around its axis of rotation relative to the background stars. It differs from the planet's solar day, which includes an extra fractional rotation needed to accommodate the portion of the planet's orbital period during one day

Aha here's a good explanation in plain English..

Each planet in the solar system rotates around an imaginary line through its center called the axis. Any measurement of a planet's movement has to be made relative to another object (or collection of objects), so the time it takes for a planet to complete a rotation depends on what this relative object is.

Rotation Period (Sidereal Day) and Planetary Day (Solar Day)
Astronomers measure every planet's rotation relative to two different things: the sun and the collection of background stars. For all practical purposes, the background stars are so far away they can be considered fixed points. A planet's rotation period, also called its sidereal day, is the amount of time required for it to complete one rotation about its axis relative to the background stars.

As the planet rotates, it also moves along its orbit, so its position relative to the sun changes. To complete a rotation relative to the sun, it requires a little longer because of this change of position. This period is called the planetary day or solar day.

The Difference Between Sidereal Day and Solar Day to an Earthbound Observer
To an observer on Earth, as the year passes, the stars appear to rotate once around the heavens. This is a result of the Earth's motion along its orbit around the sun. The period from noon (the sun's apparent high point above the Earth) on one day to noon on the next day is exactly 24 hours

Anyone got any more Q's?
I've still got til tomorrow to "Gen up".

1. What in degree's is the greatest angular separation is Mercury from the Sun as seen from Earth?

2. Which French mathematician first noticed the anomaly in precession of Mercury that was corrected by Einstein's general theory of relativity (it also gave rise to the planet Vulcan hypothesis?)

3. Which point on Mercury serves as the reference point for measuring longitude on Mercury?

4. What is the highest visible magnitude that Mercury reaches as seen from Earth (to 1 decimal place)

5. What name did the Babylonian's give to the planet Mercury?
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6. How many more times dense is the atmosphere of Venus compared to Earth?

7. What is the northern continent of Venus known as?

8. What was the first planetary mission from the European Space Agency to Venus called?

9. The mothership's of the 2 successful VEGA spacecraft went on to visit which celestial body?
10. Which famous astronomer first discovered that Venus has phases just like the Moon?










































28.3%
Urbain Le Verrier
the center of**Kal crater (never knew this)
-2.3
Nabu

92
Ishtar Terra
Venus Express
Halley's comet
Galileo

I'm improving. I knew 4 of those :)

Ta Oval.

As you maybe know, I read a lot on Astronomy but I too don't know a lot of these answers so its good fun researching for me as well.

I got a Talking book from the Library, simply called 'The Planets' - I wish I had a walkman (on cassette, not CD), I Played the 1st 3 sides so far - there are 12 sides. It's by Dava Sobell. There are bits of good info in this too.

I've never "crammed" so hard in my life.

I do appreciate your help, Oval.