Two years ago, Earth was hit by the most energetic neutrino in history. Scientists thought it might be a measurement error, but a new study has confirmed this “ghost particle” was real.

New measurements of the galaxy at the heart of the “Cosmic Horseshoe” indicate that it could house the most massive object ever seen in the universe.

Potatoes as we know them today are the product of a hybridization that took place 9 million years ago between two plants, one of which was an ancestor of the tomato.

Clinical trials have shown that six-monthly injections of lenacapavir are almost 100 percent protective against becoming infected with HIV. But big questions remain over the drug’s affordability.