A Slideshow of Voyager 2’s Grand Tour

A colour mosaic of Neptune's moon Triton, as seen by Voyager 2 in 1989. Credit: NASA

A colour mosaic of Neptune’s moon Triton, as seen by Voyager 2 in 1989. Credit: NASA

In 1977, NASA launched the twin Voyager spacecraft on parallel missions to visit Jupiter and Saturn. Lately, Voyager 1 has enjoyed the most press coverage as it’s racing inexorably closer to the edge of our solar system. It’s only a matter of time before it becomes history’s first interstellar spacecraft. But Voyager 2, the one we talk about less, arguable flew the more interesting mission. After leaving the vicinity of Saturn in 1981, it went on to become the only spacecraft to visit both Uranus and Neptune. To commemorate the 36th anniversary of Voyager 2’s launch, I’ve put together a slideshow of some of the mission’s most striking pictures on Discovery News.

A Photographic History of Our Pale Blue Dot

Earth from Cassini Rings NASA

The Earth as seen by NASA’s Cassini Spacecraft on July 19, 2013. Were the small dot, halfway down the image and slightly to the right. Saturn and its rings are in the foreground. The blue haze is sunlight refracting from Saturn E ring, which is made of material shot into space from the moon Enceladus. Credit: NASA

A couple of weeks ago, the Cassini spacecraft, currently in orbit around Saturn, turned to look back at the Earth. It took a picture, and the result is stunning. Images of the Earth as seen by distant spacecraft have become a staple of planetary missions; hardly any leave the Earth without turning around to take a picture on their way to some far flung planet or moon. I made a slideshow for Discovery News showing, chronologically, how the “pale blue dot” images have evolved since we first saw the Earth from space in 1946. Taken together, they offer breathtaking perspective of our planet, what Carl Sagan called the pale blue dot. Because really, if you’re far enough, that’s all we are.

Sandwiches in Space

A suit technician packing Conrad a lunch for his trip to the Moon. November 14, 1969. Credit: NASA

A suit technician packing Conrad a lunch for his trip to the Moon. November 14, 1969. Credit: NASA

Most of NASA’s Apollo program files are publicly available, in many cases digitized and accessible online. But there’s one picture from the Apollo 12 files that I’ve never been able to find much information about: a picture of a suit technician packing what is unmistakably a sandwich into Pete Conrad’s left leg pocket the morning he, Dick Gordon, and Al Bean launched to the Moon. Last November, I asked Dick Gordon about this scarcely documented space sandwich.  [Read more…]

McDivitt’s Trials With Orbital Rendezvous

Me, smiling like a goon, with Jim McDivitt.

Me, smiling like a goon, with Jim McDivitt.

Orbital mechanics and the challenges of orbital rendezvous isn’t a simple thing to explain, particularly as a non-scientist breaking it down for other non-scientists. But it’s a central part of the Apollo mission profile, so it comes up a lot in my line of work. To illustrate the problem, I typically tell the story of Jim McDivitt trying to rendezvous with the Titan II’s upper stage during the first orbit of Gemini 4 – the story goes that when McDivitt’s pilot instincts kicked in the whole exercise went to hell. I asked McDivitt about that first failed rendezvous when I met him in Florida in November. He promptly and candidly told me that this story, which he’s heard many times, is bull hockey. I learned from the man himself what really happened on Gemini 4. I also learned that Jim McDivitt is, and I say this with the utmost respect, a total firecracker.  [Read more…]

Apollo 8 and Inspiration Mars: Context Matters

AS08-earthrise

The Earth as seen from the Moon by the crew of Apollo 8. Credit: NASA

We have an amazing ability to selectively read history, and it’s something that happens a lot with the Space Race. We see the inspirational effects of bold missions to the Moon and use them as a benchmark for future exploration. But too often these bold missions are taken out of context. Most recently the Inspiration Mars Foundation announced in a press conference its plan to send a married couple on a free-return trajectory around Mars in 2018, citing the mission as a sort of Apollo 8 for a new generation. It struck me that not one person spoke to the motivation behind Apollo 8; the refrain was that it’s the outcome that matters in this case, an influx of students interested in the sciences and a nation wide love-in about America’s “can-do” spirit.

But context does matter. If we’re going to point to history as our guide for the future it’s important to understand where these big decisions came from and equally important to understand the context in which, in the case of spaceflight, a certain mission was so inspirational. We need history in context to have a clear understanding of where we were, where we are, and how we can possibly move forward. I’ve put Apollo 8, history’s inspirational first manned mission to the Moon, in context in my latest article for Al Jazeera.

Looking Behind the Legend of Friendship 7

Glenn inspects the artwork on his Friendship 7 capsule. Credit: NASA

Glenn inspects the artwork on his Friendship 7 capsule. Credit: NASA

Today marks the anniversary of John Glenn’s Friendship 7 flight, NASA’s first orbital mission that launched on February 20, 1962. Every year the mission is celebrated as the flight that, at least temporarily, leveled the playing field between the Soviets and the Americans in the early days of the Space Race. But there’s more to the story than its triumphs. When Friendship 7 launched, the Atlas rocket that took Glenn into orbit had a 51 percent success rate. Glenn was never assigned the first orbital flight; he landed the assignment by chance. And the mission nearly became NASA’s first fatality. A warning light suggested the spacecraft’s heat shield had separated, which, if true, meant certain death for the astronaut during reentry.

Schirra’s Stellar Navigation

John Glenn trains in a Mercury simulator, the Mercury Procedures Trainer. Credit: NASA

John Glenn trains in a Mercury simulator, the Mercury Procedures Trainer. Credit: NASA

Simulators have always been an integral part of spaceflight. In the case of the all important reentry and landing phase, simulators were like analogue versions Google Earth: reproductions of landscapes from specific altitudes taught astronauts to look for when lining up their spacecraft for reentry. But as Wally Schirra learned on his Sigma 7 flight, landing simulators can’t prepare you for everything.  [Read more…]

It Happened in Space – Mars PropM Rovers

A model Mars Prop-M rover. Credit: NASA

Long before the Sky Crane lowered Curiosity into Gale Crater, before the twin MER rovers Spirit and Opportunity bounced across the Martian surface, even before Sojourner was a glimmer in its designers’ eyes the Soviet Union launched the twin Prop-M rovers. Though neither rover made it to the surface, the technology stands as a brilliant example of the Soviet ingenuity that gave the nation an early lead in space. I tell the Prop-Ms’ story, in brief, in my first video for Scientific American.

Incidentally, I’m very excited to announce that I’m doing a monthly video series – “It Happened in Space” – for Scientific American!

The U-2 With Fictitious NASA Markings

A stunning picture of the U-2 with fictitious NASA markings. Presumably sometime in mid-1960. Credit: via cloudsovercuba.com

A stunning picture of the U-2 with fictitious NASA markings. Presumably sometime in mid-1960. It’s worth clicking on this one to see it full resolution. Credit: via cloudsovercuba.com

Researching the U-2 spy plane the other day, I came across this stunning picture of the aircraft in silhouette. For the first time I noticed a yellow NASA stripe and an ID number – 55741 – on the tail, the same markings the agency put on the X-15’s tail when it assumed control of that program in 1958. Idly interested in NASA’s history with the U-2, I searched for records of the aircraft by its ID number. Turns out, these NASA markings were put on the aircraft entirely for show.   [Read more…]

Vintage Space Favourites of 2012

The Earth as seen by the crew of Apollo 10, 1969. Credit: NASA

The Earth as seen by the crew of Apollo 10, 1969. Credit: NASA

The past twelve months have been very good ones. I’ve met and worked with some incredible people, ventured into the (often awkward) world of podcasts and webcasts, and have read and written more than I ever did in grad school. Of the hundreds of articles I’ve written, a few stand out as favourites. And so, in no particular order, here are my top picks of 2012. These aren’t the big news items or the articles that got the most traffic. These are the ones that were fun to research and write, and the ones that taught me something new. [Read more…]