So how many stars are there? Given all of the above, astronomers estimate that the Milky Way contains around 100 billion ...

According to data from the Hubble and James Webb Space Telescopes, the origins of the free-flying photons in the early cosmic ...

Lacki suggests detecting the combined glow of the emissions of several civilizations. It’s an approach that comes with its ...

According to the model, dark matter may have started as particles that were hot, light, massless, and fast. As the universe ...

We’ve grown up with the idea that the universe will expand forever, meaning the "cosmological constant" is positive. What if ...

This image combines data from the JWST's MIRI and NIRcam cameras to create a multicolour view of the Hubble Ultra Deep Field. The the green, orange, and red hues come from MIRI and reveal the reddest ...

Ordinary matter – basically, anything other than dark matter – makes up about 15% of all matter. But half of it has long been missing. Powerful bursts of radio waves emanating from 69 locations in the ...

This article, originally titled "The Man Who Discovered the Universe," is from the Summer 2025 issue of Air & Space Quarterly ...

Structures known as "zippers" and "twisters" in the early universe may explain why dwarf galaxies tend to line up with each other, as well as hint at how dark matter operates in the universe.