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 ...

Mariner 1 and 2, twin spacecraft developed from the Ranger lunar probe and equipped with seven instruments, were designed for a joint mission to Venus; however, Mariner 1 failed minutes after its July ...

Astrophysical jets are defined as rapid outflows from a central object that are focused into a narrow cone. These concentrated jets are observed across a diverse range of celestial objects, including ...

Bennu is a roughly 0.3-mile-wide (500 meters) asteroid that orbits in near-Earth space. Scientists suspect it’s a chunk of a larger asteroid that broke off due to a collision farther out. Telescope ...

The Hubble Space Telescope captured a sign of water vapor in the atmosphere of a distant exoplanet, according to an analysis of observations published last year in The Astrophysical Journal Letters.

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 ...

On November 17, the Leonid meteor shower is forecast for the early morning, with its radiant in Leo rising to over 50° by 4 A.M. local time, offering observations of fast-moving, bright meteors with ...

Following its lunar mission, China's Chang'e 2 probe performed a flyby of asteroid 4179 Toutatis on December 13, 2012, after departing lunar orbit on June 9, 2011. During the 25-minute flyby, ...

When it comes to appearances, the universe is a tricky place. Visible light occupies merely a sliver of the electromagnetic (EM) spectrum. To study the cosmos in its entirety, scientists must peer ...

Early 20th-century astronomical observations revealed unexpectedly high rotational speeds in the outer regions of spiral galaxies, prompting the hypothesis of dark matter by Fritz Zwicky in 1933. Vera ...

Stonehenge has always been shrouded in mystery. The ancient monument and burial site in southern England has been around for more than 5,000 years — but its purpose isn’t completely clear. Researchers ...