October's evening sky features prominently visible Venus (-3.9 magnitude) and less visible Mercury (-0.4 magnitude), with Mercury's visibility challenged by its low altitude near the western horizon.

Göbekli Tepe, a 12,000-year-old site in southern Turkey (potentially older in parts), predates known agricultural societies and displays complex megalithic structures, challenging existing theories ...

UPDATE 8/28/24: After pushing back the initial launch from Tuesday to Wednesday this week to check a helium leak in the launch system, SpaceX once again delayed Polaris Dawn’s launch, citing poor ...

(Editor’s note: The author of this article is one of the authors of a new paper on Planet Nine, which you can read here. It has been accepted for publication in The Astrophysical Journal Letters.) In ...

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involving current interim administrator Sean Duffy and Jared Isaacman, whose prior nomination was unexpectedly withdrawn ...

A new era in lunar research is coming, and Lunar Vertex is getting ready to lead the way. Lunar Vertex is NASA’s first so-called PRISM mission (Payloads and Research Investigations on the Surface of ...

Interstellar Comet 3I/ATLAS will reach perihelion, its closest approach to the Sun, on October 30, 2025, marking the climax of its brief, hyperbolic trajectory through our solar system before its ...

Comet Tsuchinshan-ATLAS has not disappointed — and we have the pictures now to prove it. The comet, formally known as C/2023 A3, was first discovered in January 2023 by Purple Mountain Observatory in ...

Under the leadership of George Ellery Hale, the 100-inch mirror for Mount Wilson Observatory's telescope was ordered in 1906, with funding provided sequentially by businessman John Hooker and then ...

The brainchild of George Ellery Hale, the 200-inch Hale Telescope was dedicated June 3, 1948, at Palomar Observatory in California. In promoting and fundraising for the project, Hale had a firm ...

The article clarifies that fictional portrayals of asteroid fields, such as those depicting densely packed objects, are vastly overstated and do not reflect the true nature of the solar system's main ...

When SpaceX’s Crew Dragon capsule Endeavour returns to Earth this week, she will set a clutch of records for the most time spent in space by a crewed spacecraft. Launched for her fifth mission in ...