Besides dark matter and dark energy, is there any possibility there’s anything else in outer space? What are the possibilities that white holes are really out there? More with @AstronomyCast

Besides dark matter and dark energy, is there any possibility there’s anything else in outer space? What are the possibilities that white holes are really out there? More with @AstronomyCast
Astronomers first noticed the strange behaviors of rotating galaxies almost 100 years ago, suggesting there’s an invisible dark matter hold them together with gravity. Now astronomers have found examples of galaxies that are almost entirely made of dark matter. Does this tell us anything?
Why nitrous oxide or laughing gas can be included as a biosignature gas? Also evidence for MOND as dark matter, dark nebulae, eruption of Io, and how to get the cosmonauts home?
Pulsars have baffled scientists for decades, including how they work and what form matter takes within a pulsar. This week This week @WSHcrew join by Dr. Zaven Arzoumanian and Dr. Keith Gendreau that mapped J0030. And more news update.
What are some of the problems with dark matter? What about modified gravity? Are there any other solutions? I discuss these questions and more in today’s Ask a Spaceman!
Whenever I mention dark matter in anyway in the Guide to Space, or in a questions show, I get a bunch of responses that have essentially the same point. Astronomers are just speculating, why do they even think dark matter is a thing?
Time for @AwesomeAstroPod news round-up and skyguide. We have JWST, new type of nebula, detecting life in Europa, exoplanet around dead star, galaxy with no dark matter and more. #365DaysOfAstro
Knowledge moves forward, and so, we must move with it. Today we’ll give you an update on some of the most fascinating, fast-changing topics in astronomy, astrophysics and cosmology.
Today Travelers in the Night Sky discuss about how to preserve the night sky and the invisible material that speed up galaxies.