On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

Your birthday cake isn’t the only thing studded with lights. If you see a faint light in the distance, it might be truly dim, or it might be quite bright but very far away. If you had some way of ...

One of the more recent finding of astronomy is that stars, as far apart as they are, really like to form pairs. These so-called "binary star systems" are everywhere, and as new evidence comes in we're ...

Location of 58 active galactic nuclei on the sky along with the distribution of dust along the Milky Way. Credit: The Astrophysical Journal (2024). DOI: 10.3847/1538-4357/ad11dc When did the universe ...

The standard candle is the famous Crab Nebula, which evolved from the “guest star” recorded by the imperial astronomers of China’s Song Dynasty. LHAASO has also discovered a photon with an energy of 1 ...

A new particle detector has passed a crucial test that shows it is ready to detect the "ashes" left over from a unique primordial soup that filled the universe immediately after the Big Bang. The ...

If you keep candles around the house just in case the electricity goes out, there isn't much to worry about. Standard candles are only made with paraffin or sometimes soy wax, neither of which is ...