I am going to talk about two mysterious objects that reside within our Universe. One subject will be on dark matter, and the other will be on black holes, otherwise known as the Vortex of Space.

In early times, astronomy only comprised the observation and predictions of the motions of objects visible to the naked eye. In some locations, such as Stonehenge, early cultures assembled massive artifacts that likely had some astronomical purpose. In addition to their ceremonial uses, these observatories could be employed to determine the seasons, an important factor in knowing when to plant crops, as well as in understanding the length of the year.

Study of Mercury - Astronomy Essay Suppose mercury is our home planet(Although it is not possible)but we concive by the imaginary that, we are animal of mercury planet. then A.U and Orbital period will be of other planet is:-

Common Astronomy Terms and Definitions 1.)Absorption Spectrums – Also called a “dark-line” Spectrum, this occurs when certain energies of light (colors) are absorbed by atoms. 2.)Achromatic Lens – A color corrected lens formed by cementing together two different glass lenses

Astronomy Homework Question and Answers - Second Part #4. Briefly describe the astronomical uses of each of the following: Stonehenge, The Templo Mayor, The Sun Dagger, The Mayan observatory at Chichen Itza, lines in the Nazca Desert, Pawnee Lodges, the Big Horn Medicine Wheel.