What do you mean by massive compact halo objects, or MACHOs?
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Q: Two Stars ef the Same 10°° kg mass orbit each. LOther at a Constant lds meters apart. whate is the…
A: F = GM M /d2F = 6.67 *10-11 * 1030 * 1030/(1013)2 F = 6.67 * 1023 N
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Q: If a protostellar disk is 240 AU in radius and the disk plus the forming star together contain 9…
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Q: In 2014, astronomers discovered 22 new KBOS, among those the following three: 2014 224 UE. with a…
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Q: What is an exoplanet? Group of answer choices A planet in our solar system beyond Pluto. Any planet…
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What do you mean by massive compact halo objects, or MACHOs?
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- Planetary Nebula Age. Suppose a planetary nebula is 1 pc in radius. If the Doppler shifts in its spectrum show it is expanding at 20 km/s, how old is it? (Note that 1 pc equals 3.1x1013 km, and 1 year equals 3.2x107 seconds, to two significant figures.) Please round your answer to two significant digits. At = yearswhy do dark streaks appear in visible light images of the Trifid nebula, but appear bright in an infared imageDo you expect that most planetary systems in the Universe have analogs to our Solar System's asteroid belt and Kuiper Belt? Would all planetary systems show signs of an age of heavy bombardment?
- Needs Complete typed solution with 100 % accuracy.if a protostellar disk is 260 au in radius and the disk plus the forming star together contain 7 solar masses what is the orbital speed at the outer edge of the disk in km per second. use the circular orbital velocity formulaWhat evidence can you cite that the interstellar medium contains both gas and dust? (Select all that apply.) (1)The dust of the interstellar medium can be detected from the emission lines of elements heavier than iron. (2)The dust of the interstellar medium can be detected by the extinction of light from distant stars. (3)The dust of the interstellar medium can be detected by the scattering of blue light from distant or embedded objects. (4)The gas of the interstellar medium can be detected from the radiation of ultraviolet photons. (5)The gas of the interstellar medium can be detected from the radiation of photons of wavelength 21 cm. (6)The gas of the interstellar medium can be detected from the absorption lines present in the light from distant stars, which must be caused by a medium of a density and temperature other than that of the stars emitting the light.
- Describe the Nebular Theory. Include A) what it is, B)what happened, and C) at least three lines of evidence to support it.For the following light curve, which of the answers best illustrates the orientation of the exoplanet and its host star during the dip at Time 3? Light curve Time 1 Time 2 Time 3 Time 4 Choose one: А. O C. D. Intensity B.