Recent content by Joshua Zev Levin

  1. J

    What would happen if the OSIRIS-REx asteroid Bennu smashed into Earth in 2182?

    One correction: A temperature of 39°F is equivalent to 4°C. A temperature difference of 39°F is equivalent to a difference of 5/9 x 39 = ~21.7°C.
  2. J

    Hubble tension is now in our cosmic backyard, sending cosmology into crisis

    It seems to me that there is a very simple explanation -- The laws of physics are slowly changing as the universe ages. This is a continuing process. Perhaps they were changing faster when the universe was young, but they are still slowly changing today. It could be simply that physical...
  3. J

    NASA's Jet Propulsion Lab laying off 8% of its workforce

    A lot of what goes into Hi-Tech Consumer Electronics come from technology derived from the Space Race. I propose a 3% Federal Excise (sales) Tax on Consumer Electronics to be dedicated to NASA. It will provide an ample and stable source of income for NASA, as well as give, to anyone buying a...
  4. J

    Introduce yourself! (And show us your swag)

    I am Joshua Zev Levin, Ph.D. I am primarily interested in earthbound MagLev, but am interested in Space, too. Some colleagues of mine have devised an electric MagLev space-launch system call StarTram, that should be much cheaper than chemical rockets.
  5. J

    Barnard's star has no exoplanet

    I recall that one of the earlier claims of finding an exoplanet was for Barnard's star, but that was a long time ago.
  6. J

    What do constellations look like from other stars?

    I think you misunderstand my question. Archid (η Cassiopeiae A) is a very sunlike star and part of a binary system, less than 20 light years from the sun. Most of the other stars in Cassiopeia are further away. My question is how would the other stars in Cassiopeia look from a hypothetical...
  7. J

    What do constellations look like from other stars?

    Is there any software that shows what constellations look like from other nearby stars? I am curious to see what the rest of Cassiopeia looks like from Archid (Eta Cassiopeiae).