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Astronomy, science that encompasses the study of all extraterrestrial objects and phenomena. Since the late 19th century, astronomy has expanded to include astrophysics, the application of physical and chemical knowledge to an understanding of the nature of celestial objects.
gaze, gape, stare, and glare mean to look at something or someone for a long time. gaze suggests looking steadily at something with feelings of interest, wonder, or admiration. She was gazing at the moon. gape suggests looking in wonder or surprise with your mouth open. tourists gaping at celebrities.
NAVEL–GAZING meaning: the activity of thinking too much or too deeply about yourself, your experiences, your feelings, etc.
A star is any massive self-luminous celestial body of derived from its internal energy sources. Of the tens of billions of trillions of stars in the observable universe, only a very small percentage are visible to the naked eye.
Crystal gazing, divination of distant or future events based on visions seen in a ball of rock crystal. Divination based on an analysis of reflections in water, on polished metal, or on precious stones was practiced by early humans, who probably interpreted these phenomena as a vision of the spirit.
Milky Way Galaxy (sometimes simply called the Galaxy), large spiral system of about several hundred billion stars, one of which is the Sun. It takes its name from the Milky Way, the irregular luminous band of stars and gas clouds that stretches across the sky as seen from Earth.
ASTRONOMY meaning: the scientific study of stars, planets, and other objects in outer space.
Lunar eclipse, the Moon entering the shadow of Earth, opposite the Sun, so that Earth’s shadow sweeps over the Moon’s surface. An eclipse of the Moon can be seen under similar conditions at all places on Earth where the Moon is above the horizon. Lunar eclipses occur only at full moon and do not.
Cosmology, the field of study that brings together the natural sciences, particularly astronomy and physics, in a joint effort to understand the physical universe as a unified whole. When the universe is viewed in the large, a dramatic new feature, not present on small scales, emerges—the cosmological expansion.
The Sun is at a distance of 8.3 kiloparsecs from the centre of the Milky Way system. When dealing with other galaxies or clusters of galaxies, the convenient unit is the megaparsec (1 megaparsec = 1,000,000 parsecs). The distance to the Andromeda Galaxy (Messier 31) is about 0.76 megaparsec.