Recent content by ganguly pranav

If black holes were able to stop light from escaping , then would it mean that photons do have a certain mass (no matter how much negligible it is ) and if it does then how can something that has mass (photons) travel at the speed of light. wouldn't the speed limit aplly to them too?

if the speed of the expansion is decreasing then it would mean that the radius of the Hubble sphere is increasing because it would require more space to expand faster than the speed of light .but as you said if the speed of expansion is increasing then why is the Hubble sphere increasing and why...

thank you very much

sorry for changing name and account (lost my password),anyway it is said that the expansion rate is increasing which obviously means that the Hubble constant is increasing but you said that the distance growth rate is reducing