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Wednesday, May 15, 2019

Speaking of Science: Find something that makes you happy as moon rocks made the Apollo astronauts

Speaking of Science
Talk nerdy to us

Sample 15556 from the Apollo 15 mission at the Lyndon B. Johnson Space Center in Houston on March 19.

This week, I wrote a story about the Apollo lunar sample collection -- 850 pounds of moon rocks brought back over the course of six moon missions, which were humanity's first pristine samples from the surface of another world. These rocks are the unsung scientific legacy of the Apollo era; scientists are still learning from them.

They are also really, really cool -- just ask the astronauts who collected them.

The 12 men who walked on the moon were amazingly cool, calm and collected for most of their missions. But they became gleeful as kids in a candy shop when it came time to select surface samples to carry to Earth.

Here's Apollo 12 commander Pete Conrad, describing a "grapefruit-size" rock he found not far from his landing site in the Ocean of Storms: "Oh boy, is that ... I want that rock."

His comrade Alan Bean was busily documenting the shadows in craters, but Conrad couldn't stop talking about his find. "That is a dandy extra grapefruit-size-type goody," he said. "That's got to come home in the spacecraft."

Geologic treasures were sometimes enough to compel astronauts to defy strict Extra Vehicular Activity protocols. During Apollo 15, James Irwin and David Scott spotted an especially unusual stone while driving back to their lunar module.

"Oh, there's some vesicular basalt there," Scott pointed out. "Boy. Oh man!"

In the audio of the air-to-ground communications, he can be heard saying "Hey, how about? Let's just hold on one second, we've got to have..." Then he trails off.

Next thing, Irwin announces, "Okay, we're stopping."

Only later did NASA find out what the astronauts were up to: Knowing that their bosses at mission control didn't want them to stop, Scott pretended to have a problem with his seatbelt, buying just enough time to hop out of the vehicle and grab the nugget off the ground. The lumpy, dark volcanic rock they collected, pocked with Swiss cheese holes, is now known as the "seatbelt basalt."

"It was a gorgeous thing," Scott later told astronomer and historian Eric Jones. "You could not avoid picking it up. That was one that anybody would have gotten suckered into, one way or the other."

All the Apollo astronauts were trained in geology, but Harrison H. "Jack" Schmitt, the lunar module pilot for Apollo 17, was the first astronaut with a PhD in the subject. His sheer joy at studying the lunar landscape escalated into full blown ecstasy when, upon arriving at the 300-foot-wide Shorty crater, he stumbled upon something strange.

"Wait a minute," he said.

"What?" asked Gene Cernan, the mission's commander.

"There is orange soil!" Schmitt exclaimed. "It's all over! Orange!"

Schmitt had discovered streaks of glassy volcanic material made orange by oxidation -- a surprising sign that lava had shot out of the lunar surface in spectacular fountains in the relatively recent past.

"Hey, he's not going out of his wits," Cernan reassured mission control. "It really is."

Schmitt, still excited, prepared to dig a trench to take samples. "Fantastic, sports fans," he said. "You can see this in your color television, I bet you."

Cernan took so many photographs he ran out of film. Back at mission control, scientists on the ground were just as thrilled -- jumping in the air and exclaiming at the image on their screens.

In later interviews, Schmitt would call the moon a "geologist's paradise."

 
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"Part of your jollies are gotten by trying to anticipate everything you could possibly anticipate," he said in a NASA oral history. "But then you get a new surge of adrenaline when you find there are things that you never could have anticipated. And that's discovery. That's when science really becomes exciting, those things that you didn't anticipate and they occur, and that's where scientific discoveries are made."

-- Sarah Kaplan

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Friday, May 10, 2019

🚀 Blue Origin is Building a Lunar Lander Called "Blue Moon", Starlink's Satellites Will Fly Low, Interstellar Prototype Test, and More...


Lunar lander
 

 

Now We Know What Blue Origin was Planning: A Lunar Lander


Last week we mentioned a mysterious hint from Jeff Bezos and Blue Origin. Something to do with the Moon? Well, now we know what he had up his sleeves: a lunar lander. 

The spacecraft will be called "Blue Moon", and it'll be a lander capable of delivering a variety of small, medium and large payloads to the lunar surface. This spacecraft will be able to drop metric tonnes of cargo down to the lunar surface, enabling future human explorers.

And here's the best part, a larger variant of the vehicle will be built with an ascent vehicle, like the Apollo missions, allowing humans to return to the Moon by 2024. 

A bold strategy, we'll see how it all turns out.

Fraser Cain
Publisher
Universe Today

As always, if you have comments or questions, or suggestions on how I can improve this newsletter, please don't hesitate to reply this email or email me at info@universetoday.com.

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Built in space
 

Build Enormous Structures In Space With 3D Printing

When we send anything to space, we have to pay an enormous amount of money. That's because you need to push satellites, water, astronauts up and out of the Earth's gravity well. Whether you're just going to orbit, or heading to the Moon, or out into deep space, it makes the most sense to build your structures in space, out of material that you got from space.

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Mars
 

The Global Dust Storm that Ended Opportunity Helped Teach us how Mars Lost its Water


Last year's global dust storm on Mars was so powerful that it blocked the sunlight reaching NASA's Opportunity rover. Sadly, it didn't survive. But that storm did have a side benefit for astronomers studying why Mars is so dry. The dust storm lofted water molecules high into the atmosphere, where the Sun's radiation could break them apart and blow the atoms off into space.
 


Hubble image
 

16 Years of Hubble Images Come Together in this one Picture Containing 265,000 Galaxies


You're looking at a picture that contains a quarter of a million galaxies, thanks, as always to the Hubble Space Telescope. It's called the Hubble Legacy Field, and it contains the data from all the previous detailed galaxy surveys. Nearly 7,500 individual exposures went into the creation of the Hubble Legacy Field, which contains galaxies seen half a billion years after the formation of the Universe. 
 


Satellites
 

Starlink's Satellites Will be Orbiting at a Much Lower Altitude, Reducing the Risks of Space Junk


SpaceX is continuing with its plans to launch a comprehensive low-Earth orbiting satellite internet service called Starlink. By the mid-2020s, they're expected to launch a total of 12,000 satellites, but they'll start with 4,425 over the next few years. In order to minimize the amount of space junk risk, Starlink satellites will fly at half the altitude they were originally planning. They'll have shorter transmission times, and fall back to Earth more rapidly.
 


Bear Grylls
 

Climate Change Q & A with Bear Grylls


In his new series "Hostile Planet" Bear Grylls tours the world seeing various species in their natural habitats. He also got to experience the reality of climate change and spent some time answering questions for Universe Today about what he saw. Read the interview from Nancy Atkinson.
 


Dragon Launch

 

Dragon Flies to the Space Station with Cargo and Science Experiments


We're still waiting to hear what exactly happened with the Crew Dragon accident a few weeks ago, but a completely different cargo-filled Dragon launched to the space station this week, delivering fresh supplies and science experiments to the International Space Station.

 

Spiral galaxy
 

Spiral Galaxy NGC 2903 Seen by Hubble in all its Glory


Gape slack-jawed at this amazing photograph of the spiral galaxy NGC 2903 captured by the Hubble Space Telescope. This galaxy is located about 30 million light-years away in the constellation of Leo, and was part of a recent study by Hubble of nearby disk galaxies. So pretty.
 

Asteroid
 

Hayabusa1's Samples of Itokawa Turned up Water That's Very Similar to Earth's Oceans


We're all focused on Hayabusa2, but don't forget about Hayabusa1, which was able to bring a few grams of asteroid dust back to Earth after a difficult mission to Itokawa. After analyzing the spacerock, researchers have found evidence of water on the asteroid, and even better, it's similar in chemistry to the Earth's oceans. This could help explain where the Earth got its water.
 

Blue-green algae
 

Astronauts Could Rely on Algae as the Perfect Life Support Partner


When astronauts return to deep space, we'll need to master long term life support, recycling our water and air. One interesting partner in this journey might be a type of microalgae called Chlorella vulgaris. It has a photosynthesis efficiency of up to 10 times greater than plants here on Earth, which means that it could remove carbon dioxide quickly. Oh, and it's edible. Yum?
 

Exoplanets
 

Habitability of Planets Will Depend on Their Interiors


We talk about the habitable zone as the region where liquid water can be present on a planet. But of course, this is just one aspect of a planet that encourages habitability. What's inside a planet matters too. The Earth's plate tectonics, magnetic field and many other factors determine how easy it should be for life to get a foothold.
 


Black hole simulation
 

The Black Hole Picture Could Be So Much Better If You Add Space Telescopes


Last month's image of the supermassive black hole in M87 was pretty great, but it took a telescope the size of planet Earth to create. What if you could do better? What if you could use a telescope even bigger than the Earth? Astronomers have simulated what the Event Horizon Telescope might see if it had space telescopes at its disposal as well.


Wafercraft
 

Prototype of a Future Interstellar Probe was Just Tested on a Balloon


Breakthrough Starshot is the revolutionary idea of blasting tiny probes with lasers to push them towards other stars. A team of researchers in California recently tested out a prototype of this idea by lofting a tiny spacecraft to high altitude on board a weather balloon. This "wafercraft" explored how small you can miniaturize all the parts of a satellite and still have it be functional.
 

Space debris
 

Before We Ruin the Universe, We Should Follow Some Space Sustainability Guidelines


Right now there are about 20,000 objects orbiting the Earth larger than 10 cm across. Some are operational satellites, but the vast majority are space junk. Leftover boosters, astronaut gloves and dead satellites that will orbit the Earth for years to come. Mission planners have come together to work on sustainability guidelines that will ensure that future missions don't add to the amount of junk out there.
 

Other Interesting Space Stuff

Amazing Astrophotography on @universetoday

Rosette nebula


As everyone knows, the Rosette Nebula is probably my favorite object in the night sky. It's a massive nebula that has this beautiful flower-like shape and it was captured here beautifully by @galaxy_sundowner

We have featured nearly 1,000 astrophotographers on our Instagram page, which has more than 170,000 followers. Want to do a takeover? Use the hashtag #universetoday and I'll check out your photos.

 


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