Home » 1. Convert 1″ (1 arc-second) into radians. 2. D p Use the formula ” = 1 AU ” to find

# 1. Convert 1″ (1 arc-second) into radians. 2. D p Use the formula ” = 1 AU ” to find

1. Convert 1″ (1 arc-second) into radians. 2. D p Use the formula ” = 1 AU ” to find how many kilometers are in one parsec 3. What will be the stellar parallax angle of a star that is 2 parsecs away?4. A star has a stellar parallax angle of 0.1″. How far away is it?5. A star is at a distance of 250 parsecs. Its stellar parallax is 6. A star has a stellar parallax of 0.025″. Its distance is

Imagine that astronomers have discovered intelligent life in a nearby star system. Imagine you are part of a group submitting
Imagine that astronomers have discovered intelligent life in a nearby star system. Imagine you are part of a group submitting a proposal for who on Earth should speak for the planet and what fifty word message should be conveyed. (A) Who should speak for Earth and why?(B) What should this person say in fifty words?(C) Why is this message the most important compared to other things that could be said?

Facing south and looking up, how do the stars generally seem to be moving?1 options:Toward the east Toward the

1) You are looking at a nebula through a telescope. It is mostly white and blue-grey colors. What type of
1) You are looking at a nebula through a telescope. It is mostly white and blue-grey colors. What type of nebular are you most likely looking at.a. Emission Nebulab. reflection Nebulac. molecular cloud2) You are looking at a nebula shaped like a fish. There are bright reds and greens visible in the nebula. What type of nebula are you looking at?a. emission nebulab. reflection nebulac. molecular cloud3) Many nebulas are a combination of thin, brightly emitting colored gasses and dark cold dense clouds. An example is the dark horse shape of the horse head nebula. What type of gas cloud is the dark dense cold cloud?a. emission nebulab. reflection nebulac. molecular cloud4) before they condense into protostars, molecular cloud cores are warmer lumps that are found in what type of clouds?a. emission nebulab. reflection nebulac. molecular clouds5) If a protostar doesn’t have enough mass then nuclear fusion will never ignite nuclear fusion in the core. The Protostar then becomes a ______________,a. main sequence starb. white dwarfc. brown dwarfd. red giant6) Star formation takes longer for more massive starsa. trueb. false7) What is the single most important property of a star that will determine its evolution?a. temperatureb. compositionc. massd. radius8) A high mass protostar on the Hyashi track moves along a horizontal path on the HR diagram towards the left, this protostar must be (check all that apply)a. increasing in temperatureb. decreasing in temperaturec. Increasing in radius (expanding)d. decreasing in radius (contracting)e. increasing Luminosityf. decreasing Luminosity9) Protostars for low mass stars move on their Hyashi Track in a nearly vertical direction downwards on the HR diagram. This means that the star is (check all that apply)a. increasing in temperatureb. decreasing in temperaturec. increasing size (expanding)d. decreasing size (contracting)e. increasing in Luminosityf. decreasing in Luminosity10) There are 6 main sequence stars listed below, along with their mass (in solar Masses Ms) and luminosity in solar luminosities (Ls). Place the stars in order based on their the time it takes on their Hyashi tracks (how long it took to form from a protostar into a main sequence star ) from shortest lifetime (1) to longest lifetime (6)the Sun: mass 1Ms, luminosity 1 Ls [ Choose ] 1 6 2 3 5 4 Capella Aa: mass 3Ms, luminosity 76 Ls [ Choose ] 1 6 2 3 5 4 Rigel: mass 24Ms, luminosity 85000 Ls [ Choose ] 1 6 2 3 5 4 Sirius: mass 2Ms, luminosity 25 Ls [ Choose ] 1 6 2 3 5 4 Canopus:mass 8.5Ms, luminosity 13600 Ls [ Choose ] 1 6 2 3 5 4 Achernar: mass 7Ms, luminosity 3150 Ls [ Choose ] 1 6 2 3 5 4 11) there are 6 main sequence stars listed below, along with their mass (in solar Masses Ms) and luminosity in solar luminosities (Ls). Place the stars in order based on their main-sequence lifetimesfrom shortest lifetime (1) to longest lifetime (6)the Sun: mass 1Ms, luminosity 1 Ls [ Choose ] 3 4 2 5 1 6 Capella Aa: mass 3Ms, luminosity 76 Ls [ Choose ] 3 4 2 5 1 6 Rigel: mass 24Ms, luminosity 85000 Ls [ Choose ] 3 4 2 5 1 6 Sirius: mass 2Ms, luminosity 25 Ls [ Choose ] 3 4 2 5 1 6 Canopus: mass 8.5Ms, luminosity 13600 Ls [ Choose ] 3 4 2 5 1 6 Achernar: mass 7Ms, luminosity 3150 Ls [ Choose ] 3 4 2 5 1 6

Overview:Instructions: Telescopes are one of the most important tools that astronomers use. The Hubble Space Telescope is the most well
Astronomy Assignment Writing ServiceOverview:Instructions: Telescopes are one of the most important tools that astronomers use. The Hubble Space Telescope is the most well known of NASA’s space telescopes but it is actually only one of many space telescopes within NASA’s Telescope Fleet viewing the sky in multiple wavelengths of light. The Spitzer Space Telescope, an infrared telescope, has been one of astronomers’ best tools for learning about star birth in particular.Find a scientific article that tells us about one of the latest star formation discoveries and try to find out which telescope brought us the information. (put the name of your discovery in the subject line, e.g. the stellar nurseries’ name, or its location, key words to search on would include: star birth, stellar nurseries, star formation, etc.):***You may repeat a stellar nursery as long as your finding about it is substantially different from someone else’s. (Make sure to include this information in your Subject line.)Tell us also what part of the electromagnetic spectrum (e.g. optical, radio, x-ray, ultraviolet, etc.), was used in your research.Explain why your finding is useful to understanding the process of star birth,Supply your reference.

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