What kind of celestial object is Neowise C/2020 F3 and what makes it special?
Q: What is an emission nebula?
A: The space between stars and galaxies is filled with clouds of gas and dust. These clouds of gas and…
Q: What is the temperature for a very reflective, nearly white planet with a reflectivity of 99.3% at a…
A: Given data, Albedo α=99.3% Distance=1 AU
Q: If a prostellar disk is 260 au in radius and the disk plus the forming star together contain 7 solar…
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Q: Use the small angle equation to find the angular diameter of Sgr A* if it has a diameter of 13 AU…
A: The small-angle equation is used in astronomy to calculate the distance between Earth and other…
Q: What is the wavelength shift (delta) (h) of a exoplanetery system at a wavelength of X angstroms if…
A: The Doppler shift is a change in frequency or wavelength of a wave in relation to an observer who is…
Q: why must astronomers use infrared telescopes to observe the motions of stars around Sgr A*? The…
A: The star Sgr A* lies in the centre of the galaxy. The amount of dust and debris is relatively more…
Q: What is the order of magnitude of "big G"? (Numerical answer).
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Q: Given that an astronomical unit is 1.5x10° kilometers and a light-year is about 1013 kilometers, how…
A: The distance between Sun and Earth is defined as the Astronomical Unit (AU). It was created by…
Q: Which one of the mechanism below can NOT be responsible for providing intrinsic luminosity for…
A: Intrinsic luminosity is defined as the luminosity an object will have if there is no loss of…
Q: The telescope and CCD camera described in question 2 are scheduled to observe the star cluster M67…
A: The cluster M67 is never visible in the sky from London so we should abandon any plans to observe…
Q: If Exoplanets A and B are orbiting their host stars at similar distances and we know that the host…
A: We know from Planck law for blackbody the radiation: The spectral radiance : B(λ)=2hc2λ5ehcλkT-1 So,
Q: what is the smallest planet that could be detected around a 0.4 Rsun M dwarf star?
A: transit depth is the ratio of surface area of planet and the star transit depth = πRp2πRs2 where Rp…
Q: If Sally could drive a Jetson's flying car at a constant speed of 390.0 km/hr across oceans and…
A: Given data: Distance (d) = 390.0 km/hr Distance (d) = 8.4 AU Required: Time (t)
Q: Question: Record the angular shift. 1.7 arcsec Question: These images were taken six months apart,…
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Q: . These images were taken six months apart, first when Earth was as far to one side of Alpha…
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Q: O O O 1. Brightness 2. O 3. 4. 1 2 3 The position of the star and the planet on the left correspond…
A: A light curve illustrates the variation in a star's brightness caused by the passage of an exoplanet…
Q: Exoplanet observation (a) Consider the star and exoplanet shown in the figure below. This system is…
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Q: 1.004 1.002 1.000- 0.998 0.996 0.994 0.992 0.990 10 20 30 40 50 t-2458543 [BJD] From the data,…
A: A: Orbital period of the planet can be estimated from the plot. B: The orbital distance of the…
Q: We observe a star that is dstar away. How much extinction would there need to be (i.e., what must 7…
A: A star is observed that is at a distance away.We need to find the value of the extinction required…
Q: If our Sun were surrounded by a cloud of gas, would this cloud be an emission nebula? Why or why…
A: Emission nebulae are formed in regions surrounding young stars. When a star is formed in the…
Q: What percentage of the mass of the solar nebula consisted of elements other than hydrogen and…
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Q: What is the temperature for an almost completely absorbing dark planet at 1 AU and with a…
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Q: The Solar nebula was "mostly" b. hydrogen compounds: ammonia, methane and water c. heavier elements…
A: NEBULA:- A nebula is a giant cloud of dust and gas in space. Some nebulae come from yhe gas and dust…
Q: What is a standard candle in the astronomical sense? How do Cepheid variables fit into this and what…
A: For distances which are too large to measure using parallax, astronomers use 'standard candles'.…
Q: Jupiters moon, lo, loses about 870.0 kg/s of sulfur dioxide to Jupiters magnetosphere. Sulfur…
A: Given:- Jupiter's moon, lo, loses about 870.0 kg/s of sulfur dioxide to Jupiter's magnetosphere.…
Q: The time it takes for a cloud 106,000 AU in radius to collapse in "free-fall to form a new star is…
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Q: Imagine that in the future, scientists plan on colonizing planets that orbit other stars. Based on…
A: SOlution:
Q: Venus can be as bright as apparent magnitude -4.7 when at a distance of about 1 AU. How many times…
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Q: Take the slab in (Figure 1) to be glass with refractive index n = 1.62 and 01 = 48.6°. Figure 1 of 1
A: When a light ray passes from one medium to another medium, It follows the Snell's law. According…
Q: A halo CME is observed moving away from the Sun. Should we expect this CME to impact Earth?…
A:
Q: Using a 8-m reflector telescope on Mars, what is the maximum distance we could measure using stellar…
A: we need to tell us what is the maximum distance we could measure using stellar parallax.
What kind of celestial object is Neowise C/2020 F3 and what makes it special?
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- The Perseverance rover landed on Mars in early 2021. During travel to Mars, thespacecraft carrying the rover cruised at a speed of nearly 25,000 miles per hour. Atthis speed, how long would it have taken for the spacecraft to travel 0.5 au? Giveyour answer in daysIf a protostellar disk is 240 AU in radius and the disk plus the forming star together contain 9 solar masses, what is the orbital speed at the outer edge of the disk in kilometers per second?UF, s In 2014, astronomers discovered 22 new KBOS, among those the following three: 2014 with a period of 331.1 years; 2014 TT, with a period of 280.8 years; 2014 QM with a period of 315.2 years. Given that information and knowing that Neptune's period is 85 441 164.8 years, which of those objects - if any- are likely part of the Plutino family of KBOS? Show your work that lead you to your conclusion.
- A star orbiting Sagittarius A* is orbiting 970 AU from a 4 million MSun object. How fast (in km/s) is the star orbiting? (Assume the orbit is approximately circular.)What is the relationship between the color of a reflection nebula and the color of the star that illuminates it?How is the blue color of a reflection nebula related to the blue color of the daytime sky?
- why do dark streaks appear in visible light images of the Trifid nebula, but appear bright in an infared imageWhat kind of object is the Messier Object M42, and where is it in the sky?Describe the Nebular Theory. Include A) what it is, B)what happened, and C) at least three lines of evidence to support it.