Winds from intense star formation in the early universe swept away material for future stars. This galaxy-killing wind led to the early deaths of galaxies.
New telescopes might bring scientists closer to detecting dark matter. They could soon reveal signals that finally let us understand this mysterious substance.
Stardust in Antarctica reveals the presence of an element that is not naturally made on Earth. But it is created in supernovas. Read more about the evidence.
Skylab was America's 1st space station. 3 crews lived and worked there for over 171 days, studying the sun and Earth and setting records for life in space.
Members of the EarthSky community - including scientists, as well as science and nature writers from across the globe - weigh in on what's important to them.