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Celestron telescope.
What starting telescope equipment does the Astronomy Cast team suggest? How much energy does a black hole generate? And how do we measure time outside the Earth?
If you’ve got a question for the Astronomy Cast team, please email it in to info@astronomycast.com and we’ll try to tackle it for a future show. Please include your location and a way to pronounce your name.
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Shownotes
Telescope Suggestions:
- Oceanside Photo and Telescope
- Telescope Reviews on Universe Today
- Orion Dobsonian Telescopes
- TeleVue Telescopes
- Celestron Telescopes
Would a black hole the same size as the sun give off the same amount of energy as the sun?
- Do black holes give off energy? This articles says, perhaps, yes. — Wired
- The Isaac Asimov book Fraser talked about was likely in the Galactic Empire of the Foundation Series. Anyone know which one?
How do we measure time if we leave Earth?
How do heavy elements like iron end up in the inner rocky planets but not in the outer solar system or in the sun?
- Gas giant planets could have core of iron and nickel — UK Astronomy Expert
- Sun does have some heavy elements, but a very small percentage — Cornell U
- Our Amazing Solar System — How Stuff Works
- Episode #123: Homogeneity w/Chris Lintott
Why doesn’t a photon have mass?
- Photons do not have mass, but they have momentum — NASA
- Higgs Boson — CERN
Is an open universe infinite? What shape do we think the universe is? Did the early universe inflate at infinite speed?
- Geometry of the Universe — UTK
- Shape of the Universe — Wiki
- Episode #78: Shape of the Universe
- Episode #79: How Big is the Universe
- Episode #58: Inflation
- What is the Universe expanding into? — Cornell U.
How to use binoculars:
- Binoculars for Astronomy — Universe Today
- How to Focus Binoculars — Appalachian Mountain Club
What are the processes that limit star size, and why don’t black holes have that limit?
- Upper Limit on Star Mass– Universe Today
- “Don’t Supermassive Me: Black Holes Regulate their Own Mass” — Universe Today
- Solar Radiation Pressure — Wiki
Is the expansion of the Universe caused by decaying matter?
- Dough and raisin analogy discussed here — Cornell U. (same as above)
- Paper: Bulk Viscosity, Decaying Dark Matter and Cosmic Acceleration –– Astro-ph
- Conservation of Momentum — NASA
If the age of the Earth is derived from the decay of primordial material from when the sun condensed from a supernova, aren’t we just dating the supernova and not the sun?