Q&A for How to Find the Big Dipper

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  • Question
    In which direction can we see the big dipper?
    Kyle
    Community Answer
    It depends on the time and season. But if you look at the two outer stars in the bowl of the Big Dipper, and extend them by five times their own length then you will find the North Star, Polaris. Polaris is always on the North point.
  • Question
    What is a light year and does that mean we are looking at the Big Dipper in the past?
    Community Answer
    A light year is the distance that light travels in a single year, which is about six trillion miles. Thus, if we were looking at a star that is six trillion miles away from us, we are actually looking at the way it was a year ago. The same is true with the stars of the Big Dipper. We are actually looking at stars as they looked years ago. For example, Dubhe, one of the stars in the Big Dipper, is 105 light-years from earth, so we are seeing it as it looked 105 years ago.
  • Question
    Is there an Ursa Major Galaxy?
    Kyle
    Community Answer
    Several galaxies are found in Ursa Major, including the pair Messier 81 (one of the brightest galaxies in the sky) and Messier 82 above the bear's head, and Pinwheel Galaxy (M101), a spiral northeast of Ursae Majoris. The spiral galaxies Messier 108 and Messier 109 are also found in this constellation.
  • Question
    Can you see it from the equator area?
    Community Answer
    Yes, as long as you are not too far south of the equator. If you are, then you can't see it.
  • Question
    In the back of my mind from elementary science I was taught that the speed of light is 186,000 miles per second. Is this correct?
    TomPN
    Top Answerer
    Yes, but in this day and age it's usually given in the metric system as 300,000,000 m/s.
  • Question
    Does the Big Dipper have an eighth star?
    Community Answer
    It does, but it's a double star, barely visible to the naked eye (and not at all from some vantage points). Since only seven stars are visible at a glance, that's the number stargazers use to find it.
  • Question
    Does the Big Dipper actually move, or does it just appear to move because of the Earth's rotation?
    Community Answer
    The Earth is rotating, and space is not.
  • Question
    How do I find Ursa Major?
    TomPN
    Top Answerer
    Start by following the instructions in this article to find the Big Dipper. Go to the right to find the nose of Ursa Major, and go downward a bit to find the legs. Be careful, though - most of Ursa Major is quite dim (the Big Dipper is the pattern formed by the seven brightest stars).
  • Question
    Can I see the Big Dipper in South Africa?
    TomPN
    Top Answerer
    No, you're too far to the south. In general, you have to be north of the equator to see the Big Dipper.
  • Question
    Can I see Big Dipper or Little Dipper in Australia?
    Community Answer
    The Big Dipper is visible from Darwin and Townsville. The handle, at six degrees elevation, should be visible from Brisbane, depending on the weather.
  • Question
    Can I see it from South India?
    Andrew Gee
    Community Answer
    It depends on where you are. The southernmost tip of India lies about eight degrees north of the equator, so the North Star should appear eight degrees above an unobstructed north horizon. The town of Nagercoil sits at an elevation of about 200 feet. Twenty-three miles to the north are mountains that rise about one mile above sea level. A little math determines that the mountain sits at an angle of about two and a half degrees. Again, no problem. Of course, if you're in the mountains, all bets are off. But if there is no fog or other obstructions, you're okay.
  • Question
    Do any of the stars in the Big Dipper have planetary systems?
    TomPN
    Top Answerer
    The star at the top-left of the pan (where the pan and the handle meet) has a ring of dust around it, but no planets.
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