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cosmology

Controversial claim that the universe is skewed could upend cosmology

Space

Controversial claim that the universe is skewed could upend cosmology

Our understanding of the universe is underpinned by the cosmological principle: the assumption that, on the grandest scales, it looks more or less the same in all directions. What if that's wrong?

Features

Why I'm choosing dark matter over dark energy - for now at least

Space

Why I'm choosing dark matter over dark energy - for now at least

Comment

Figure 4. Pseudo-color images of all Cepheid-bearing galaxies analyzed in this work.

Space

It’s official – we don’t know how fast the universe is expanding

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Star trails over the Nicholas U. Mayall 4-meter Telescope on Kitt Peak National Observatory near Tucson, AZ.??

Space

Largest 3D map of the universe contains 8 million galaxies

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3 of the most exciting space telescopes planned for launch by 2034

Space

3 of the most exciting space telescopes planned for launch by 2034

Features

How the James Webb telescope will rewrite the story of the universe

Space

How the James Webb telescope will rewrite the story of the universe

Features

This artistic impression shows two black holes that are spiralling towards each other and will eventually coalesce.

Space

Merging black holes may create bubbles that could swallow the universe

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WHY is there a cosmic speed limit?

Physics

Why is there a cosmic speed limit? It could even be why we're here

Features

WHY is the universe just right? Spiral Galaxy in deep spcae, 3D illustration

Life

Why is the universe just right for life? Blame the multiverse

Features

WHY is the universe intelligible? X-ray: NASA/CXC/SAO/R. DiStefano, et al.; Optical: NASA/ESA/STScI/Grendler

Physics

Why is the universe intelligible? Things aren’t as clear as we think

We have made huge progress in understanding some bits of the cosmos, but we’ve hit a brick wall with things like quantum theory and our own minds. Is there a way round?

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Physics

Why is there something not nothing? The big bang isn’t the only answer

Features

Life

Why do we exist? The meaning of life isn’t to be found in the stars

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Space

Cosmic calculation may settle debate about the rate the universe grows

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Space

We finally know when the first stars in the universe switched on

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