A novel astronomical event, termed a "superkilonova," is proposed to explain the coincident detection of gravitational waves (S250818k), indicating a subsolar-mass neutron star merger, and an ...

On December 28, 2025, the open cluster M41 in Canis Major, located 4° south of Sirius and shining at magnitude 4.5, is best observed around local midnight when it is 30° above the southern horizon, ...

On December 25, the Moon will pass 4° north of Saturn at 11 P.M. EST, with both celestial bodies observable in the southwestern sky during the evening. Saturn will present a magnitude of 0.7, ...

Lovell, the first individual to complete four spaceflights, significantly advanced the Gemini program's objectives through missions like Gemini VII, which established extended duration flight records ...

The observation period features lunar appulses with Saturn, Neptune, and Uranus, complemented by transits of Jupiter's Galilean moons (Io and Europa) and their shadows across the gas giant's disk.

The article highlights a specific celestial event on December 27, 2025, detailing the transit of Io and its shadow across Jupiter's disk. It provides guidance for observing the constellation Auriga, ...

A grand-design spiral galaxy, named Alaknanda, was discovered forming approximately 1.5 billion years after the Big Bang, challenging previous astrophysical models on the timescale required for ...

The collection documents various transient solar system events, including a dynamically tailed Comet Lemmon, a seven-planet alignment, and two distinct total lunar eclipses, one of which was ...

On December 12, Uranus will be observable in western Taurus, situated 7 arcminutes due south of the 6th-magnitude star 14 Tauri, providing an identification aid. The Geminid meteor shower is forecast ...

New research has mapped 16 extensive, interlaced river systems on Mars, dating back approximately 3.7 billion years to the Early Hesperian Period. These large river systems, despite covering only ...

On December 9th, Neptune will attain its stationary point at 7 P.M. EST, marking the conclusion of its retrograde motion. The ice giant will be situated near Saturn and the Circlet of Pisces in the ...

Comet 24P/Schaumasse is presented as an observable target, estimated at 12th magnitude, situated in the vicinity of Leo the Lion. Optimal viewing for Comet 24P/Schaumasse is specified for ...