Across the galaxy, astronomers now see that planetary systems fall into four broad classes, and our own solar system, part of the rare Ordered group, is only one of them. At the same time, discoveries ...

Cosmologists have found signs that a second type of dark energy — the ubiquitous but enigmatic substance that is pushing the current Universe’s expansion to accelerate — might have existed in the ...

Forbes contributors publish independent expert analyses and insights. I write about the philosophy and ethics of science and technology. Our Universe is made up of a lot of strange stuff. Normal ...

The first type of molecule that ever formed in the universe has been detected in space for the first time, after decades of searching. Scientists discovered its signature in our own galaxy using the ...

NASA announced Wednesday that scientists have discovered evidence in space of the very first type of molecule ever formed in the universe, following decades of searching and research. Using ...

Our Universe is expanding, getting less dense and cooling today, teaching us that it was hotter and denser in the distant past. If we extrapolate backwards in time, we can reach epochs where: ...

Rarest Stars in the Universe: Stars come in many forms, but some types are so rare that only a handful exist in our galaxy. For example, O-type stars account for just 0.00003% of the stars near the ...

Based on scientists' calculations, the first molecule to ever form from stray atoms in the universe was likely helium hydride, a combination of helium and hydrogen. For decades, physicists have hunted ...