That's difficult, and I don't really know. I think that the present idea is that as the universe expands, the contribution of dark energy to the universe's mass-energy content will increase, but I don't know whether the density of dark energy will decrease or remain constant. See Dark energy -...
As one of the Popes said, 'Know then thyself, presume not God to scan.' I am content to know a little about the world, not to claim equality with any god.
Always glad to oblige.
Probably because its gravity is too weak and because it is in the stronger gravitational field of the Earth.
The Earth is not bilobar because its gravitational field is strong enough to force it into a spherical shape. The Moon was probably ejected from the proto-Earth...
I didn't say that the photographs don't prove anything. On the contrary, they show that there are asteroids and cometary nuclei that have a bilobar shape that requires an explanation.
It would be better to say 'a galaxy' or 'galaxies' rather than 'a star' or 'stars'. The stars in our own Galaxy are not receding from us as a result of the expansion of the Universe.
Anything could have been made by God, but that hypothesis doesn't explain the unusual shape of Arrokoth. The collision+fusion hypothesis offers a possible explanation, but, in my opinion, the data are insufficient to make this any more than a hypothesis.
I was following Wildswanderer's argument, where he said,
and was trying to understand what he meant by saying 'when one kind of living thing is changed into another kind'. Since he appeared to regard the ~400,000 species of beetles as a single kind, I proposed that the 6.400 species of mammals...
That is a picture of the trans-Neptunian object 486958 Arrokoth; it was imaged by the New Horizons probe on 1st January 2019. See 486958 Arrokoth - Wikipedia for more information.
So do all the 400,000 species of beetles belong to the same kind? And if so, do all the 6,400 species of mammals belong to the same kind? In our evolution over the last 65 million years, we have remained mammals and primates, so there has been no vertical change, that is no change of kind.
I don't know. Lawrence Krauss, in A Universe from Nothing, suggested that 'nothing' is unstable, but that is only one hypothesis. Stay around for a few years, and we may have an answer.
About 13.8 billion years ago.
These questions are probably meaningless. If they have any meaning, I don't...
No, it means a lot more than that. With the theory of evolution it means knowing a great deal about all aspects of biology (of living organisms, not just fossils), much more than I know, and, I suspect, much more than you know.
With the theory of the formation of planets and stars, it needs...
According to Scientific theory - Wikipedia , 'A scientific theory is an explanation of an aspect of the natural world and universe that has been repeatedly tested and corroborated in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of...
The 13+-billion year age comes from measurement of the Hubble constant (the ratio of the recession velocity of the galaxies to their distance) and from analysis of the anisotropy of the cosmic microwave background. If you want to learn more, I can recommend John Gribbin's books 13.8: the quest...
Did they know of the existence of binary stars, some of which eclipse each other? Did they know about pulsating stars? Did they know that some that stars have magnetic fields much stronger than the Earth's? Did they even know how far away the stars are?