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Sputnik 2 was launched by the Soviets shortly after Sputnik 1, with its rapid preparation intended to sustain propaganda momentum and align with the 40th anniversary of the Bolshevik Revolution. This ...

PBS's NOVA will present "Operation Space Station," a two-part special premiering November 5 and 12, documenting 25 years of continuous human habitation on the International Space Station (ISS) through ...

The First Quarter Moon is scheduled for October 28 at 12:21 P.M. EDT, presenting its terminator halfway across the visible lunar disk. During this lunar phase, observers can distinguish maria and ...

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 ...

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 ...

A leadership contest for the permanent NASA administrator position is underway, involving current interim administrator Sean Duffy and Jared Isaacman, whose prior nomination was unexpectedly withdrawn ...

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 Sky This Week from September 26 to October 3: Catch the soft glow of the zodiacal light ...

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.