Meet Metis – Jupiter’s Closest, Quickest Moon

Everyone’s heard of Jupiter’s four most famous moons Europa, Io, Callisto, and Ganymede—we’ve known about them for over 400 years, thanks to Galileo—but giant Jupiter has many more moons than that. To date there are thought to be 69 natural satellites orbiting Jupiter. 53 are officially named, while 16 are awaiting further confirmation. So you’d…

It’s Been 32 Years Since We Last Explored Uranus

Voyager 2 may have been the second of NASA’s famous twin exploration spacecraft but it actually launched first, on August 20, 1977. Eight and a half years later it became the first (and, to date, last) spacecraft to visit Uranus, at 31,500 miles across the third largest planet in the Solar System. Voyager 2 made its closest…

Uranus Lights Up for Hubble

Those white areas aren’t clouds; they’re aurorae—”northern lights”—around the poles of Uranus, captured by the Hubble Space Telescope in 2012 and 2014. (The image of Uranus itself was acquired by the Voyager 2 spacecraft in January 1986.) “The auroras on Jupiter and Saturn are well-studied, but not much is known about the auroras of the…

Voyager 1’s Famous Long-Distance Valentine

If you’re in love with space then you’ll fall head over heels for this: it’s a picture of Earth taken from the Voyager 1 spacecraft after it passed the orbit of Pluto back in 1990—on Valentine’s Day, no less. That image of our planet from almost 4 billion miles away inspired Carl Sagan to write his famous…

It’s Been 31 Years Since We Last Visited Uranus

Voyager 2 may have been the second of NASA’s famous twin exploration spacecraft but it launched first, on August 20, 1977. Eight and a half years later it became the first (and last) spacecraft to visit Uranus, at 31,500 miles across the third largest planet in the Solar System. Voyager 2 made its closest pass by Uranus…

Pale Blue Dot: Our Valentine from Voyager 1

If you’re in love with space exploration then you’ll fall for this: a picture of Earth (and five other planets) taken from the Voyager 1 spacecraft after it passed the orbit of Pluto in 1990, 26 years ago today. That image of our planet from almost 4 billion miles away inspired Carl Sagan to write his…

Voyager’s Valentine Turns 25 Today

If you’re in love with space exploration then you’ll fall for this: it’s the picture of Earth taken from the Voyager 1 spacecraft after it passed the orbit of Pluto in 1990. That image of our planet from almost 4 billion miles away inspired Carl Sagan to write his famous “Pale Blue Dot” passage, and…

New Global Map of Triton Shows Neptune’s Moon Like Never Before

This Monday will mark the 25th anniversary of Voyager 2’s visit to Neptune, its historic close approach to the distant ice giant having been made back on Aug. 25, 1989. To mark the occasion, the Lunar and Planetary Institute has released a newly-restored, high-resolution map of Triton, Neptune’s largest moon and the last solid body to…

Voyager’s Long-Distance Valentine

This is from a post I originally published in 2010. I’ll keep trotting it out until it’s not cool anymore. (Which I don’t think will ever happen.) On February 14, 1990, after nearly 13 years of traveling the solar system, the Voyager 1 spacecraft passed the orbit of Pluto and turned its camera around to…

The Brightest Lights: 12 Awesome Space Stories of 2013

What a year for space exploration! With 2013 coming to a close I thought I would look back on some of the biggest news in space that I’ve featured here on Lights in the Dark. Rather than a “top ten” list, as is common with these year-end reviews, I’m going to do more of a…

Voyager 1: It’s Officially Out

“We made it! 35 years and 13 billion miles.” Those were the words of project scientist Ed Stone today during a NASA news conference about the Voyager 1 spacecraft, which, after traveling the far reaches of our Solar System for decades on end, has finally passed the physical boundaries of the heliosphere and entered interstellar…

Research Reveals Rain Shadows from Saturn’s Rings

A rain of ionized water molecules falls into Saturn’s upper atmosphere from its rings, researchers from England’s University of Leicester have found. Using images from NASA’s Voyager spacecraft and more recent near-infrared observations from the Keck Observatory in Hawaii, it has been found that dark bands seen across Saturn are actually the “rain shadows” of…