To estimate distances, the team analyzed the objects' brightnesses across multiple wavelengths to infer redshift, age and mass. JWST's powerful Near-Infrared Camera and Mid-Infrared Instrument are ...

No one knows where the comet came from. It’s like glimpsing a rifle bullet for a thousandth of a second,” said David Jewitt, ...

The simplest explanation — that Punctum is an extreme example of something familiar — hasn’t been ruled out. A magnetar in an unusual environment, a supernova remnant tangled with dense material, or ...