Wausau Pilot & Review The night sky this week rewards patience, darkness and careful timing. A rare stretch of moonless ...

New analysis on 2017 Hubble images of the Jupiter-family comet, 41P/Tuttle–Giacobini–Kresak (41P/TGK), indicates that the ...

41P/Tuttle-Giacobini-Kresak is now known to be in the Jupiter family of comets, going from a little inside Jupiter's orbit to almost as far as Earth on its 5.4-year orbit. It is notable for its large ...

First its rotation slowed between March and May 2017, taking 46 hours to complete a spin where it had once taken only 20 hours. This occurred as the comet neared its closest point to the sun, roughly ...

Several planets will line up shortly after sunset, on February 28, during a planetary alignment. Six planets will be visible during this event, and four of the planets will be ...

A vast underground tunnel known as a lava tube, formed from ancient volcanic activity, was recently discovered lurking beneath Venus.

A distant star system with four super-sized gas giants has revealed a surprise. Thanks to JWST’s powerful vision, astronomers detected sulfur in their atmospheres — a chemical clue that they formed ...

As next-generation telescopes map this outer frontier, astronomers are bracing for discoveries that could reveal hidden planets, strange structures, and clues to the solar system’s chaotic youth.

NASA’s Nancy Grace Roman Space Telescope will conduct a wide-area survey to study dark matter, dark energy, and the expansion of the universe across 11 billion light-years.

One of the longest stellar dimming events ever observed was likely caused by the gigantic saucer-like rings of either an unseen brown dwarf or "super-Jupiter" blocking its host star's light, ...

If a gas giant planet is big enough to ignite deuterium fusion, it becomes a brown dwarf instead of a planet. But this definition is incomplete and does not tell us how gas giants form or what ...

There's a comforting idea in planetary science. That no matter how strange a distant world looks, its beginnings might still ...