Recent content by The Lazy Astronomer

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    Stephen Hawking says civilizations on other planets in unlikely for at least...

    Incorrect statement. We've only been listening for the last 50 or so years which means we are limited to a 50 lightyear radius - not several hundred light years. If it were several hundred then we must have had radio telescopes pointed at the sky in the 1300's.
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    History of the formation of earth ? 10 pointsssss?

    1. Molecular Cloud - floating in space 2. Cloud started to contract under gravity, heating and spinning as it contracted 3. Accretion process starts and Protostar formed at the centre 4. Cloud is now a spinning disc. Accretion continues at various points in the disk - this is where the...
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    Stephen Hawking says civilizations on other planets in unlikely for at least...

    Incorrect statement. We've only been listening for the last 50 or so years which means we are limited to a 50 lightyear radius - not several hundred light years. If it were several hundred then we must have had radio telescopes pointed at the sky in the 1300's.
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    Earth Science : Astronomy Question?

    4. 3 is the Main Asteroid Belt - NOT the Milky Way.
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    Stellar Density in the Orion Spur vs Omega Centauri?

    Omega Centauri has a density of 180stars/ly^3 or about 80,000 times the density of our solar neighbourhood.
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    The Orion SkyQuest XT10, on a scale from 1 to 10 how would you rate it? What can you

    $ values are relative - US$, AUS$? Orion have a good name and 10" is a good size. Its a good scope - it now all depends on the eyepieces and where you set it up.
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    The Orion SkyQuest XT10, on a scale from 1 to 10 how would you rate it? What can...

    $ values are relative - US$, AUS$? Orion have a good name and 10" is a good size. Its a good scope - it now all depends on the eyepieces and where you set it up.
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    Can you help me with a question for my Intro to Astronomy Class? Know...

    Hubble constant is H in your equation. Pi and G are constants so ignore them and just toss in a couple of simple values for H and you get your answer (H is lower value if the recession rate is slower)
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    Orion StarMax Mak-Cass Telescope?

    A 5" Mak is a reasonable telescope but with a high focal ratio and small aperture you are really limiting yourself to Moon, Planets and Double stars....
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    Orion StarMax Mak-Cass Telescope?

    A 5" Mak is a reasonable telescope but with a high focal ratio and small aperture you are really limiting yourself to Moon, Planets and Double stars....
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    I failed Chemistry and i want to do Astronomy?

    Astronomy can involve chemistry but it doesn't have to involve a lot. There are only a handful of common molecules and elements in Astronomy but it really depends on what field of Astronomy you want to get in to.
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    which of the following is NOT a significant detriment to the search for...

    B. The dust does not block radio
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    which of the following is NOT a significant detriment to the search for...

    B. The dust does not block radio
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    If the northern hempisphere can see Orion (Contellation) can the southern...

    Yes on the most part. Deep Southern Hemisphere will have a limited view. Of course the NH has an upside down view of the constallation :)
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    Is it irresponsible to leave Earth based biology on other planets?

    Why would it be irresponsible? Do you propose leaving everything to "natural selection"?
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