For many women, having a period presents a challenge each month, whether itâs managing premenstrual syndrome (PMS) or just feeling out of sorts. Other women, however, have few symptoms at all because their natural cycle comes with a light, short menstrual period. A short menstrual period might seem like a gift, but a light or irregular period could signal pregnancy, menopause, or even a serious medical problem.
The smallest planet in regards to both mass and volume is Mercuryâthis tiny world is nearly 20 times less massive than Earth, and its diameter is about times 2 Â½ smaller. In fact, Mercury is closer in size to our Moon than to Earth.The largest planet in our solar system by far is Jupiter, which beats out all the other planets in both mass and volume. Jupiterâs mass is more than 300 times that of Earth, and its diameter is about 11 times larger than Earthâs diameter.he smallest planet in regards to both mass and volume is Mercuryâthis tiny world is nearly 20 times less massive than Earth, and its diameter is about times 2 Â½ smaller. In fact, Mercury is closer in size to our Moon than to Earth.
The biggest known by mass is R136a1 : see List of most massive stars. The largest known by volume is UY Scuti : see List of largest stars. R136a1 is in the nearby Large Magellanic Cloud , where it is also relatively easy to see things and be certain of their distance. UY Scuti is a mere 9,500 light-years away: our own galaxy is at least 100,000 light-years across.