Sentences with phrase «cooled over billions of years»

In recent years, the big bang model — the idea that our universe has expanded and cooled over billions of years from an initially hot, dense state — has been confirmed and elaborated in spectacular detail.

Not exact matches

Since the mass at that point will be insufficient for carbon ignition to occur, it will slowly cool down over tens of billions of years until all that's left is a relatively tiny black dwarf.

«If some of the billions that have been spent over the years on the film and tax credit were spent instead on upgrading the subway's signal system, this might have been the cool summer instead of the summer of hell.»

Underlying the entire galaxy is a smooth distribution of cooler red stars that trace Andromeda's evolution over billions of years.

The experiments indicate that the planet's interior cooled dramatically, over 240 degrees Celsius between 4.2 and 3.7 billion years ago — a geologically short span of 500 million years.

Today the central star is of mag 16.6 and a high temperature of some 60,000 K, which will probably cool down as a white dwarf over the coming tens of billions of years.

At the lower - left is the band of white dwarfs - these are the dead cores of old stars which have no internal energy source and over billions of years slowly cool down towards the bottom - right of the diagram.

I point out out once again that the long term average of the Earth's surface temperature, (I'm happy with your definition of «surface»), over he last four and a half billion years or so is one of cooling.

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