Scanning the constellation Cepheus the King leads us to one of the sky’s largest emission nebulae — IC 1396. It measures a whopping 2.8° by 2.3°. But this region also contains dark nebulae and a ...

Mars was a very different place as a young planet. Liquid water dotted the Red Planet’s landscape with lakes and rivers. But the planet’s climate changed drastically in the past few billion years.

Venus is a prominent fixture in the evening sky, still hanging on at magnitude –4.8 and setting nearly three hours after the Sun. It’s currently located in central Pisces, far outshining any stars in ...

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 ...

On October 27th, Jupiter will be observable south of Pollux in Gemini at magnitude –2.2, with East Coast observers having the opportunity to witness an occultation of its moon Io between approximately ...

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 ...

Saturn is visible only briefly in early February, but its rings are nearly edge-on. Venus is bright and easily visible throughout February, changing in phase and apparent size. Jupiter shows its moons ...

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

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.

On October 25, Saturn's moon Iapetus reaches inferior conjunction, positioned 1.3′ north of Saturn and shining at approximately 11th magnitude, making it easier to observe near its parent planet.

The 2025 astronomical year will feature Mars at opposition on January 15/16, exhibiting increased brightness and apparent size. Significant planetary events include Venus's transition from evening to ...

The Saturn I rocket, developed by Wernher von Braun's team since 1957, was designed to facilitate American lunar ambitions, integrating components and reusing hardware from existing missile ...