It orbits a G-type star, like the Sun, at a distance of just 19.7 light-years, which is, on the scale of the Universe, in the very close neighbourhood of the Earth.

However, although photons of light existed since the first second after the Big Bang, they could not yet shine across the ...

The ocean that nurtured life in the ancient past was 'green'! ~Understanding the evolution of photosynthetic organisms on Earth 2.5 billion years ago~ - Nagoya University Research Results Information ...

For years, scientists have worked to chart the universe’s massive structure, aiming to test key models of cosmology. These ...

Pale green dot. The oceans were likely once a vibrant green color between 3.8 and 1.8 billion years ago, according to a study published in the journal Nature Ecology & Evolution.During this period ...

Earth’s oceans once turned green – and they could change again Published: April 9, 2025 1:02pm EDT. Cédric M. John, Queen Mary University of London. Author. Cédric M. John ...

This is the background to the discovery of super-Earth HD 20794 d by an international team. The new planet lies in an eccentric orbit, so that it oscillates in and out of its star's habitable zone.