Comet C/2025 A6 (Lemmon) unexpectedly continued to brighten past its predicted peak on October 21, achieving an estimated 4th magnitude. Despite its brightness, increasing lunar illumination ...

China is preparing for the Shenzhou-21 crewed mission, targeting the Tiangong space station. The mission's launch, utilizing a Long March-2F carrier rocket from the Jiuquan Satellite Launch Center, is ...

Star formation begins with protostars in cold molecular clouds, where gravitational contraction precedes nuclear fusion, and their early evolutionary stages are best characterized through ...

Guidance is provided for observing the planet Mercury. Optimal viewing is specified as shortly after sunset, with Mercury positioned low in the western sky. Binoculars are recommended as an aid, ...

Jupiter will be observable in Gemini, passing 7° south of Pollux at 11 A.M. EDT, with a visual magnitude of –2.2. The prominent stars Pollux and Castor are described, with Pollux noted as a magnitude ...

On October 23, the Moon will pass 0.5° south of Antares, observable low in the southwest approximately 40 minutes after sunset, potentially revealing earthshine and Mare Crisium with binoculars.

Astronomers have detected the first tidal disruption event (TDE), designated AT2024tvd, occurring 2,600 light-years outside its host galaxy's core, exhibiting intense, rapidly evolving radio signals.

The emerging subdiscipline of "astroimmunology" has been formalized, focusing on understanding how spaceflight stressors significantly compromise the human immune system. A new guide, published in ...

On October 22, the Moon will achieve two close conjunctions, passing 5° south of Mars and 2° south of Mercury, before reaching its orbital apogee at 406,445 km (252,553 miles) from Earth. Observers ...

A recent study proposes that future Mars missions should prioritize searching for microbial life or its preserved remains within the planet's ice, rather than in its rocks, clay, or soil. Researchers ...

Interim NASA Administrator Sean Duffy announced the reopening of the Human Landing System (HLS) contract for the Artemis 3 lunar landing mission. This decision arises from concerns regarding SpaceX's ...

The earliest documented solar eclipse is recorded in the ancient Chinese text *Shujing*, describing a celestial event where "the Sun and Moon did not meet harmoniously in Fang." Initial scholarly ...