One Week to Pluto: An Outcast World, In From the Cold (Part 2)

An artist’s depiction of New Horizons encountering a Kuiper Belt Object (KBO). Image Credit: Johns Hopkins University APL/Southwest Research Institute (JHUAPL/SwRI)

Tomorrow morning, less than 100 hours will remain before the first machine fashioned by human hands completes the initial reconnaissance of the last of the Solar System’s “traditional” nine planets. NASA’s New […]

One Week to Pluto: An Outcast World, In From the Cold (Part 1)

An artist’s depiction of New Horizons encountering a Kuiper Belt Object (KBO). Image Credit: Johns Hopkins University APL/Southwest Research Institute (JHUAPL/SwRI)

Earlier this week, NASA released the latest images of the Pluto-Charon binary system, as the New Horizons spacecraft—newly recovered following a brief and heart-stopping loss of communications last weekend—approaches its quarry, more […]

More Details on Pluto and Charon Emerge in Latest Images as New Horizons Begins Approach Phase 3

A series of images of Pluto, taken by New Horizons’ Long Range Reconnaissance Imager, or LORRI, showing numerous large-scale features on the distant planet’s surface. These images are displayed at four times the native LORRI image size, and have been processed using a method called deconvolution, which sharpens the original images to enhance […]

Rosetta Observations Spark Debate on Origin of Earth's Water

Comet 67P/Churyumov-Gerasimenko on 20 November 2014. This mosaic comprises four individual NAVCAM images taken from 30.8 km from the centre of Comet 67P/Churyumov-Gerasimenko on 20 November 2014. Credit: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0

Comets? Asteroids? Or what?

One of the most basic questions driving Astronomy and Space Exploration is: Where did the […]

Pluto's Unnamed Moons Given Names by IAU

Two newly discovered moons orbiting Pluto have been given official names by the International Astronomical Union. Image Credit: NASA / STSci

Two of Pluto’s small moons, previously known just as P4 and P5, have been given official names by the International Astronomical Union (IAU). Pluto is the god of the underworld in classical […]

Undiscovered Country: Of New Horizons and the Kuiper Belt

Neptune’s largest moon, Triton, seen here in an image from the Voyager 2 flyby, is thought to be a captured Kuiper Belt Object. Photo Credit: NASA.

Starting at about the orbit of Neptune and stretching out to roughly 50 astronomical units (1 AU = Earth-Sun distance), or 7.5 billion kilometers from the Sun, […]