What constellation lies in the direction toward the galactic center quizlet?

What constellation lies in the direction toward the galactic center?

The Galactic centre is the point about which our Galaxy is rotating. It is located roughly 24,000 light years from the Solar System in the direction of the constellation Sagittarius, but cannot be seen in optical light due to heavy obscuration by interstellar dust grains along the line of sight.

What are most heavy elements made quizlet?

Almost all elements heavier than hydrogen and helium were made inside stars. Most of the mass of the Milky Way is located in the halo of the galaxy in the form of dark matter. All elements heavier than iron are made during supernova explosions.

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How far is the Sun from the center of the galaxy quizlet?

Approximately how far is the Sun from the center of the galaxy? E. 27 million light-years. Which constellation lies in the direction toward the galactic center?

What do astronomers typically refer to as heavy elements quizlet?

It is the continuous recycling of gas in the Galactic disk between stars and the gas clouds that form new stars. What do astronomers consider “heavy elements” ? All elements besides hydrogen and helium.

What constellation is Sagittarius in?

Sagittarius is commonly represented as a centaur pulling back a bow. It lies between Scorpius and Ophiuchus to the west and Capricornus and Microscopium to the east. The center of the Milky Way lies in the westernmost part of Sagittarius (see Sagittarius A).

Sagittarius (constellation)

List of stars in Sagittarius
Messier objects 15

What constellation is Scorpio in?

Scorpius, (Latin: “Scorpion”) also called Scorpio, in astronomy, zodiacal constellation lying in the southern sky between Libra and Sagittarius, at about 16 hours 30 minutes right ascension and 30° south declination.

What is Sgr A * quizlet?

What is Sgr A*? A source of bright radio emission in the center of our galaxy. Based on counting the number of galaxies in a small patch of the sky and multiplying by the number of such patches needed to cover the entire sky, the total number of galaxies in the observable universe is estimated to be approximately.

Does the Sun orbit the center of the Milky Way?

Our Milky Way galaxy is a big place. Even at this blazing speed, it takes the sun approximately 225-250 million years to complete one journey around the galaxy’s center. … The sun revolves around the center of the Milky Way galaxy.

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What kind of objects lie in the disk of our galaxy quizlet?

Open clusters and young stars are generally found only in the disk of the galaxy and not in the halo. We can see most of the galaxy with visible light. Observing the galaxy at radio wavelengths allows us to see beyond the dust in the disk of the galaxy that obscures our view.

What do astronomers mean by a constellation?

constellation, in astronomy, any of certain groupings of stars that were imagined—at least by those who named them—to form conspicuous configurations of objects or creatures in the sky. Constellations are useful in assisting astronomers and navigators to locate certain stars.

What is believed to lie at the center of galaxy?

At its center, surrounded by 200-400 billion stars and undetectable to the human eye and by direct measurements, lies a supermassive black hole called Sagittarius A*, or Sgr A* for short. … A supermassive black hole is the largest type of black hole in a galaxy, with a mass millions of times that of our sun .

Does the Earth lie close to the center of the galaxy?

The Solar System (and Earth) is located about 25,000 light-years to the galactic center and 25,000 light-years away from the rim. So basically, if you were to think of the Milky Way as a big record, we would be the spot that’s roughly halfway between the center and the edge.

What kind of object do we think lies in the center of the Milky Way galaxy?

Astronomers believe that supermassive black holes lie at the center of virtually all large galaxies, even our own Milky Way. Astronomers can detect them by watching for their effects on nearby stars and gas.

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What kind of objects lies in the halo of our galaxy?

The Milky Way’s stellar halo contains globular clusters, RR Lyrae stars with low metal content, and subdwarfs. Stars in our stellar halo tend to be old (most are greater than 12 billion years old) and metal-poor, but there are also halo star clusters with observed metal content similar to disk stars.

What kinds of objects lie in the disc of our galaxy?

The Galactic Disk contains old and young stars in population one and population two categories. (Population one stars: metal-rich young stars.) (Population two stars: metal-poor old stars.) The Galactic Disk also contains gas and dust and spiral arms which is where our galaxy received its categorized name.