This chart shows the location of the Milky Way central region in the night sky. It lies in the direction of the constellation of Sagittarius (The Archer), and is marked with a red circle in the image.
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.
In which constellation do we find the galactic center quizlet?
the center of our galaxy is located in the direction of the constellation orion. the rapid rotation in the outer disk suggests that our galaxy is more massive than previously thought.
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.
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 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).
|List of stars in Sagittarius|
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.
How do stars in the galactic halo orbit the center of the galaxy?
How do stars in the galactic disk orbit the center of the galaxy? In nearly circular paths and in roughly the same plane. … How are population II stars different than the sun, a population I star?
Does the Earth lies close to the center of the galaxy?
The Earth lies close to the center of the Galaxy. Motions of objects near our Galaxy’s core suggest the central black hole is about 3.7 billion solar masses.
What use are 21 cm radio waves to galactic astronomers?
What use are 21 cm radio waves to galactic astronomers? Their Doppler shifts let us map the motions and locations of gas in the spiral arms.
What are the oldest members of the Milky Way galaxy?
A team of astronomers using the Gemini-South telescope has discovered one of the oldest stellar clusters in the Milky Way. The team’s results date the globular cluster, named HP 1, at about 12.8 billion years, making its stars among the oldest ever found in our Galaxy.
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.
What can cause a galactic fountain?
This cooling is triggered by the interactions between the ambient gas and disc gas that is ejected into the surrounding medium by stellar winds and supernova explosions (stellar feedback). These phenomena produce a cycle of gas from the disc to the ambient and back that is called galactic fountain.
How far away is the Sun from the galactic center?
The Sun does not lie near the center of our Galaxy. It lies about 8 kpc from the center on what is known as the Orion Arm of the Milky Way.
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 .