X-ray observations have revealed something curious about the young star that illuminates McNeil’s Nebula, a glowing jewel of cosmic dust in the Orion constellation: The object is a protostar rotating ...

The protostar is launching the longest outburst ever seen at 32 light-years long.

Using the James Webb Space Telescope, astronomers have detected unexpected high-energy ultraviolet radiation around five infant stars, or protostars, in the Ophiuchus star birthing region. The ...

Young stars need time to grow into their final masses before they begin fusing lighter elements into heavier elements as main-sequence stars. They can spend hundreds of thousands of years as ...