TIME technology

Watch NASA Test These 3D-Printed Rocket Parts

3-D printers can bring rockets to space.

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If you thought the coolest application of a 3-D printer was creating a miniature model of yourself to show to your friends, then NASA has just proven you wrong.

Two 3-D printed rocket injectors were recently successfully tested by NASA at the Marshall Space Flight Center in Huntsville, Alabama. These powerful injectors mix liquid nitrogen and hydrogen to produce a combustion that can reach temperatures over 6,000 degrees Fahrenheit and generate over 20,000 pounds of thrust.

It sounds simple enough — the injectors’ design was entered into a 3-D printer’s computer, and the printer then built each part through a process known as selective laser melting.

“We wanted to go a step beyond just testing an injector and demonstrate how 3-D printing could revolutionize rocket designs,” said Chris Singer, director of Marshall’s Engineering Directorate.

With conventional manufacturing methods, the rocket injectors would require the creation and assembly of 163 individual pieces; with the 3-D printer, only 2 pieces were necessary. This unique method not only saved scientists and engineers time and money, it is also less likely to fail than the traditionally-built piece.

TIME space

Astronomers Just Witnessed the Formation of an Ancient Galaxy

An artist's impression of star birth deep inside the core of young, growing elliptical galaxy. Z. Levay, G. Bacon— STScI/NASA,

They call it "Sparky"

Think Milky Way, but smaller.

Astronomers have for the first time witnessed the formation of a massive galaxy, which they have dubbed “Sparky.” This galaxy contains twice as many stars as our own galaxy, but is is just a fraction of the size.

This galactic behemoth is so far from Earth that its observable light reaching our planet was actually created 11 billion years ago — that’s just 3 billion years after the Big Bang.

“We suspect that this core-formation process is a phenomenon unique to the early universe” explains Erica Nelson of Yale University, who’s a member of the team that put together the findings and research.

Astronomers suspect that there are other galaxies similar to Sparky. In the future, infrared telescopes such as NASA’s James Webb Space Telescope, which is set to launch in 2018, should help to shed some light on these issues.

TIME Economy

Motor City Revival: Detroit’s Stunning Evolution in 19 GIFs

One year ago today Detroit became the largest city in US history to file for bankruptcy. See what changes took place in the city in the years leading up to the momentous declaration.

The Motor City, the former automotive capital of the nation, has seen a steady and precipitous decline in population and economic growth over the last half-century. The automotive industry’s move out of Detroit, poor political decision-making, and the collapse of the housing industry can all be viewed as causes for the city’s decline, among other reasons. On July 18, 2013, unable to pay its looming debts, Detroit became the largest city in U.S. history to enter bankruptcy.

However, this momentous step did not happen overnight. Detroit was hit with a housing crisis in 2008, a sign of economic trouble that foreshadowed the city’s bankruptcy. A major outcome of that crisis is the city’s ongoing blight epidemic. Vast stretches of abandoned residential property lay on the outskirts of the once sprawling 139-square-mile city.

As Steven Gray wrote in 2009, “If there’s any city that symbolizes the most extreme effects of the nation’s economic crisis and, in particular, America’s housing crisis, it is Detroit.”

While many of the buildings and houses within the city have disappeared, evidence of a former era can be found in the more than 80,000 blighted houses remaining combined with an estimated 5,000 incidents of arson each year, according to the New York Times Magazine.

Despite all this, the Motor City could have a bright road ahead. There has been a recent surge in growth, spurred by a sense of opportunity in the ever-evolving city. New businesses are popping up and property is being rebuilt and re-purposed for urban farming, startups and public art.

Google Street view images, compiled here into GIFs, offer a unique look at how Detroit’s landscape has changed over the past four to six years leading up to the city’s bankruptcy a year ago.

TIME tanzania

Rats Sniff Out Danger: 15 Years of Land Mine Progress

In Tanzania Giant African Pouched Rat rats are being used to identify and sniff out land mines.

Correction appended, June 23

Fifteen years after the Anti-Personnel Mine Ban Convention gathered for the first time with a signed treaty in Mozambique, its leaders met again Monday to asses the progress that has been made. In the past 15 years, 161 countries have signed on. The meeting, which will last through Friday, will evaluate the advancements that have been made banning the use of land mine weapons, helping land mine victims, and clearing minefields.

In the bordering country of Tanzania, Giant African Pouched Rat rats are being used to identify and sniff out land mines. These enormous rodents are bred and trained by a Belgian NGO called APOPO, which has it’s headquarters based in Tanzania. Once the rats have undergone the six-step training process to become experts at sniffing out TNT and detecting mines they are known as HeroRATs. These photo show what the training process is like for these life-saving rodents.

Correction: The original version of this story misstated when the meeting of the Anti-Personnel Mine Ban Convention will end and when members first met as signatories to the treaty.

TIME Environment

Here’s What We Can Expect From El Niño This Year

The El Niño weather phenomenon that has previously devastated the Western Pacific and parts of Australia now has a 90% chance of striking again this year.

The El Niño weather phenomenon that has previously devastated the Western Pacific and parts of Australia now has a 90% chance of striking again this year according to a recent report by the European Centre for Medium-range Weather Forecasts (ECMWF). This weather anomaly is characterized by an unusual warming of the Pacific Ocean and has caused intense hurricanes and drought in the past. But what can we expect from the phenomenon this summer?

South Asia will likely be hit first with heavy rain and flooding. Drought conditions in Australia and a drop in the fish population off of the west coast of South America will follow. El Niño also damages the agricultural industries in countries surrounding the Pacific Ocean such as Indonesia, and the Philippines. Efforts are currently being made in some of these regions to lessen the impending impact that El Niño will have.

The results of the El Niño events in 1997-1998 were by far the worst in recent history, but unlike thunderstorms and snowstorms forecasters have little ability to predict how intense future El Niño episodes will be. According to the National Oceanic and Atmospheric Administration (NOAA) it is also near impossible to pinpoint the exact dates that El Niño will begin.

Within the next month more details regarding El Niño and when it will begin will become clearer. In the meantime people around the world will begin to gather resources and prepare themselves.

 

 

 

 

 

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