Recent content by shellyhe

I like your answer but just don't think that the objects mentioned is enough to keep any particular galaxy from falling apart. For example, if there were many black holes near a large visible galaxy, there would be some visible evidence. Maybe it could be a combination of unseen matter, as you...

It might be Catherine Heymans from Scotland or Dr. Mike Hudson from University of Waterloo, Canada.

It might be Catherine Heymans from Scotland or Dr. Mike Hudson from University of Waterloo, Canada.

For many years I have been posting articles pushing for the Modified Gravity (MOND) theory to explain Dark Matter. Now the Timescape cosmology model seems to be taking the stage for Dark Energy. For now I am just reading about Timescape and haven't decided what Dark Energy camp to join. I am...

Let's wait for manned missions to Mars for the following reasons: 1. Time. Chemical rockets of today cannot propel any craft to speeds other than a 6 month or so journey. That's a terrible long time for any trip anywhere psycologically. 2. Radiation. The dangers of the space environment...

Hello folks, After a short hiatus, but always reading new commentary from respected astrophysicists and space jounalists, I proudly remain in the camp that Dark Matter is nothing more than gravity behaving differently at long distances and closely resembles the Modified Dynamics (MOND) theory...

I have read your reply to my thread many times over and conclude that you don't know what you are talking about. Right now, it is impossible to prove that dark matter pops in and out of existence. Sorry.

For many years, I have remained in the camp of the MOND theory in lieu of the existence for dark matter. Now with the new discoveries by the James Webb telescope, along withe a new theory by a prominent Canadian astronomer, and the possible emergence of a fifth force in the universe, it now may...

I am just reaching out to the community on these related questions: If it might take a Starship lander to reach the moon after 10 refuelings, how is a similar Starship going to make it to Mars? Shouldn't SpaceX try to develop a nuclear engine that would solve not only the refueling problem, but...

It's been a while since I voiced my feelings about the existance of Dark Matter. Now I recently read that the Hubble Tension crisis may be caused by the same reasons that Dark Matter cannot be identified. Can it not be that gravity varies over large distances as the MOND theory tries to...

For many years, I have been a proponent of the Mond Gravitational Theory in lieu of the existence of Dark Matter. I want to remain true to my form by staying with these concepts. There is a new study from the ESA Gaia Satellite Mission, that after about 25,000 measurments, the MOND theory...

I wonder why we spend so much time examining planets off red dwarf stars. Of course they are close to us and we always seem to find new ones in habitable zones. As I see it, a civilization or any kind of technologically advance life form would find it a hard go to develop in such an...

I am reaching out to the community on this idea: Can SpaceX build a Rotating Detonation Engine that NASA has been tinkering with for many years? Did Elon notice this design? SpaceX seems to always do things faster, cheaper and better than anyone else. I wouldn't be surprised if such a...

I first want to thank the community for reading and commenting on all of my previous posts. Would you maybe answer or opinionize these questions? In light of severe uncertainties of the SLS not launching soon (or if ever) and the delays of Starship, can Spacex's Falcon Heavy somehow take...

Mr. Nelson: Please stop your insanity right now. NASA did this long ago with Apollo era rockets and moved on to the Space Shuttle program and looked towards new designs. Also, they did it even with several more Saturn V's ALREADY BUILT. Mr. Nelson: Just admit to the mistakes and show some...