SpaceWe have found traces of the universe's first ever stars The earliest stars left their mark on the hydrogen gas that drifts in deep space, and the same traces could also hint at the true nature of dark matter News
PhysicsMystery dark matter may be ordinary neutrons that have decayed Dark matter makes up a lot of the universe, but we still don’t know what it is. Could it be neutrons decaying into strange particles that shun normal matter? News