NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute
NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

We Reach Pluto Tomorrow! 10 Fast Facts About 'New Horizons'

NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute
NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

Tomorrow morning, July 14, at 7:49 am ET, the spacecraft New Horizons makes its closest approach to Pluto in history. We'll be nearer to Pluto than New York City is to Hong Kong. Over the coming months the spacecraft will return libraries of knowledge about the mysterious planet. Here are a few things you might not know about the extraordinary probe.

1. New Horizons is the fastest spacecraft ever launched.

In 2006, an Atlas V rocket blasted New Horizons into space. By its third separation stage, the spacecraft was traveling a shade under 10 miles per second. To give some idea of its speed, it took the Apollo astronauts three days to get to the moon. New Horizons reached the same distance in nine hours.

2. Jupiter’s gravity acted as a slingshot on the probe.

A “gravity assist” involves a spacecraft flying near a planet and using that planet’s gravity to change speed or direction, as if flung by a giant slingshot. Jupiter’s gravity hurled New Horizons an extra 9,000 miles per hour, ramping up its speed to 52,000 miles per hour. While traveling through the Jovian system, New Horizons gave its instruments a test run, capturing such never-before-seen phenomena as lightning near Jupiter’s poles.

3. It is carrying the ashes of the man who discovered Pluto.

In 1930, Clyde Tombaugh, an American astronomer at the Lowell Observatory, discovered the planet that was eventually named Pluto. Tombaugh died in 1997, and New Horizons is carrying a small amount of his ashes. When the probe eventually moves beyond the Kuiper Belt, Tombaugh's ashes will be the first to travel beyond our solar system. The probe also carries a CD-ROM containing the names of 434,000 people who signed up to have their names sent to Pluto.

4. Planetary scientists consider Pluto a “science wonderland.”

That’s how the team at Johns Hopkins University’s Applied Physics Laboratory, which operates the New Horizons mission for NASA, describes the Pluto system. In addition to mapping Pluto’s geology and morphology, and analyzing its atmosphere and weather, New Horizons will study Charon, Pluto’s largest moon. By orbiting around a common center of gravity, the two worlds make up the only “binary planet” in the solar system. This is the first time we can study a new planetary class known as “ice dwarf” (the other two in our solar system being terrestrial planets and gas giants).

5. The entire mission will use less power than two 100-watt bulbs.

The energy efficient spacecraft is powered by a radioisotope thermoelectric generator (RTG), a kind of plutonium power plant. Like a big thermos bottle, the spacecraft is wrapped in thermal blankets (the gold foil seen in photographs) to hold in the heat produced by the spacecraft’s electronics, keeping them at a stable temperature. Notably, the RTG doesn’t provide propulsion. The spacecraft is still flying on the speed created by the launch and Jupiter’s gravity assist.

6. Its data is transmitted to Earth at 2 kbps.

The spacecraft uses a giant dish antenna to communicate with NASA’s Deep Space Network. It’s no trivial effort, though; the beam is only 0.3-degrees wide and has to hit Earth from Pluto and, eventually, beyond. (Considering the distances involved, New Horizons is quite the sharpshooter.) It takes four hours for data to arrive at the spacecraft, and once the flyby is complete, the probe will need a full 16 months to send all the data home.

7. There is almost zero margin for error.

The numbers are astonishing: New Horizons has traveled 3 billion miles at approximately 31,000 miles per hour (currently) and, if all goes as planned, will hit a target just 200 miles across. Because of orbital mechanics, if it is 100 seconds off course, it will not be able to gather 100 percent of the desired scientific data. Think about that: 100 seconds off course from a travel time of 9.5 years. Now that’s precision.

8. New moons mean new dangers.

In 2011, New Horizons discovered a second moon orbiting Pluto (Kerberos), and a year later a third (Styx). That’s been both exciting and worrying. These moons lack the mass and gravity to keep debris caused by planetary collisions from flying into space, where they could potentially smash into New Horizons. Debris doesn’t have to be big to be a threat: a piece the size of a grain of rice could prove catastrophic to the probe. Think of a rock hitting your windshield. Now imagine if you were driving 31,000 miles per hour.

9. The USA is the first country to explore every planet in the solar system.

NASA has been the first to launch each spacecraft that has successfully visited every planet, starting with Mariner 2 in 1962. July 14 is also the 50th anniversary of the Mariner 4 mission to Mars, the first exploration of the red planet. New Horizons completes humanity’s reconnaissance of the classical solar system.

10. The New Horizons mission does not stop with Pluto.

Once the spacecraft passes Pluto, it will have enough power and propellant to continue into the Kuiper Belt, a gigantic zone of icy bodies and mysterious small objects orbiting beyond Neptune. These objects are the building blocks of Pluto and planets like it. The new course will take New Horizons one billion miles beyond Pluto.

Frederick M. Brown, Getty Images
Stephen Hawking’s Memorial Will Beam His Words Toward the Nearest Black Hole
Frederick M. Brown, Getty Images
Frederick M. Brown, Getty Images

An upcoming memorial for Stephen Hawking is going to be out of this world. The late physicist’s words, set to music, will be broadcast by satellite toward the nearest black hole during a June 15 service in the UK, the BBC reports.

During his lifetime, Hawking signed up to travel to space on Richard Branson’s Virgin Galactic spaceship, but he died before he ever got the chance. (He passed away in March.) Hawking’s daughter Lucy told the BBC that the memorial's musical tribute is a “beautiful and symbolic gesture that creates a link between our father's presence on this planet, his wish to go into space, and his explorations of the universe in his mind.” She described it as "a message of peace and hope, about unity and the need for us to live together in harmony on this planet."

Titled “The Stephen Hawking Tribute,” the music was written by Greek composer Vangelis, who created the scores for Blade Runner and Chariots of Fire. It will play while Hawking’s ashes are interred at Westminster Abbey, near where Isaac Newton and Charles Darwin are buried, according to Cambridge News. After the service, the piece will be beamed into space from the European Space Agency’s Cebreros Station in Spain. The target is a black hole called 1A 0620-00, “which lives in a binary system with a fairly ordinary orange dwarf star,” according to Lucy Hawking.

Hawking wasn't the first person to predict the existence of black holes (Albert Einstein's general theory of relativity accounted for them back in the early 1900s), but he spoke at length about them throughout his career and devised mathematical theorems that gave credence to their existence in the universe.

Actor Benedict Cumberbatch, a friend of the Hawking family who portrayed the late scientist in the BBC film Hawking, will speak at the service. In addition to Hawking's close friends and family, British astronaut Tim Peake and several local students with disabilities have also been invited to attend.

[h/t BBC]

IKEA's New Collection for Tiny Apartments Is Inspired by Life on Mars

Living in a city apartment can feel claustrophobic at times. As Co.Design reports, the Swedish furniture brand IKEA took this experience to the extreme when designers visited a simulated Mars habitat as research for their latest line of housewares aimed at urbanites.

The new collection, called Rumtid, is tailored to fit the cramped spaces that many people are forced to settle for when apartment-hunting in dense, expensive cities. The designers knew they wanted to prioritize efficiency and functionality with their new project, and Mars research provided the perfect inspiration.

At the Mars Society's Mars Desert Research Station in Utah, scientists are figuring out how to meet the needs of potential Mars astronauts with very limited resources. Materials have to be light, so that they require as little rocket fuel as possible to ferry them to the red planet, and should ideally run on renewable energy.

IKEA's designers aren't facing quite as many challenges, but spending a few days at the simulated Martian habitat in Utah got them thinking on the right track. The team also conducted additional research at the famously snug capsule hotels in Tokyo. The Rumtid products they came up with include an indoor terrarium shaped like a space-age rocket, a set of colorful, compact air purifiers, and light-weight joints and bars that can be snapped into modular furniture.

The collection isn't ready to hit IKEA shelves just yet—the chain plans to make Rumtid available for customers by 2020. In the meantime, the designers hope to experiment with additional science fiction-worthy ideas, including curtains that clean the air around them.

Air purifiers designed for urban living.

Furniture joints on bubble wrap on black table.

Modular furniture holding water bag.

[h/t Co.Design]

All images courtesy of IKEA.


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