Twelve billion years ago, in a universe still finding its form, a cosmic giant was already in full spin. Astronomers have now spotted a colossal spiral galaxy — nicknamed the Big Wheel — that formed ...

For a quarter century, cosmology has rested on a simple but audacious idea: that a fixed “cosmological constant” drives the ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration of the cosmic web where the universe's missing matter was discovered. | Credit: ...