A distant star dimmed by 97% for nearly 200 days. Astronomers say giant rings around a brown dwarf or super-Jupiter may explain it.

Astronomers have reported one of the longest stellar dimming events ever recorded, with a Sun-like star fading by 97 percent for nearly 200 days. Astronomers believe one of the longest stellar dimming ...

Since the 1990s, astronomers have found a handful of other dwarf planets in the belt, such as Eris and Sedna, along with ...

NASA has confirmed its sightings of the farthest known galaxy to date, providing an unprecedented look back into the early universe about 280 million years ...

Runners often want to know how they compare to their peers when it comes to race times, workouts, and of course, mileage. That’s not to say you should try to match Fasty McFast who has been running ...

Emma Marcucci works for the Smithsonian Astrophysical Observatory, as Executive Director of the Smithsonian STARS program, which is supported through private gifts and donations. Scholars widely agree ...

Eric and Wendy Schmidt are backing a start-up-like approach to building a giant space telescope and powerful ground observatories. By Kenneth Chang Kenneth Chang reported on the unveiling of Schmidt ...

The 247th Meeting of the American Astronomical Society (AAS 247) is being held Jan. 4 to Jan. 8 and will feature remarkable findings in exoplanet research and discussions shaping the future of ...

Most planets spend their lives orbiting a star, but some are destined for exile. According to a study published in Science on Jan. 1, 2026, astronomers have successfully measured the mass and distance ...

In the run up to Christmas, carols fill the air. Many have an astronomical twist, singing of the "Christmas Star" from the story of the nativity. Described in the Gospel of Matthew, the star guided ...

From new exoplanetary neighbors and a weakening dark energy to the best evidence for life on Mars and an interstellar comet that's got everyone talking, 2025 has been jam-packed with astronomical ...

The supernova SN 2025wny is hopelessly far, lying approximately 10 billion light-years from Earth. Normally, this would make it impossible for astronomers to detect. But one team got lucky. While ...