Used SpaceX Rocket Launches Satellite, Then Lands in Historic 1st Reflight – By Irene Klotz, SPACE.com on March 31, 2017


Elon Musk says reusing expensive orbit-class boosters will mean “a huge revolution in spaceflight”

Credit: SpaceX Flickr 

CAPE CANAVERAL, Fla. — A SpaceX Falcon 9 rocket soared off a seaside launch pad at NASA’s Kennedy Space Center here today (March 30) on an unprecedented second mission to deliver a spacecraft into orbit, proving the booster’s reusability.

The two-stage, 23-story-tall rocket lifted off at 6:27 p.m. EDT (2227 GMT) in the second launch in two weeks for Elon Musk’s SpaceX, which is ramping up its flight rate following an accident in September.

Perched on top of the rocket, which sported a new upper stage and payload fairing, was the 11,645-lb. (5,282 kilograms) SES-10 communications satellite, which is intended to provide TV, internet and other services to customers in Latin America. [In Photos: SpaceX Launches, Lands 1st Reused Falcon 9 Rocket]

“This is a really, really exciting step forward,” Martin Halliwell, chief technology officer of Luxembourg-based SES, said before launch. “I think the whole industry is looking.”

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Explore the Beauty of Space With the NASA Photo Archives – TAYLOR GLASCOCK. 11.02.15. 3:02 PM


It is impossible to look at photos of space and not feel awe. A picture of Earth as seen from the moon, the rings of Saturn, or a nebula can only fill a viewer with wonder. Such images are where science and art meet, teaching us more about the cosmos even as they leave us pondering our place in the universe.

Some of the best space photography has been compiled in Earth and Space: Photographs from the Archives of NASA. The images, taken by the Hubble and Spitzer space telescopes, Herschel Space Observatory, and other equipment, offer a stunning look at the vast realm beyond our planet. Writer Nirmala Nataraj and scientist Bill Nye hope the book inspires as well as informs.

“Photos are one of the primary ways we learn to process phenomena that are inexplicable and vast,” Nataraj says. “When we find ourselves bumping up against the ceiling of our imagination, photos of space help us recapture a sense of wonder, possibility, and curiosity about the nature of the cosmos.”

Article continues:

http://www.wired.com/2015/11/explore-the-beauty-of-space-with-the-nasa-photo-archives/

Dying Star Destroys a Dwarf Planet – By Sarah Lewin and SPACE.com | October 22, 2015


The planet-destroying Death Star from “Star Wars” may be fictional, but a star at the end of its life and only a bit bigger than Earth could be its real-world twin: The star is currently destroying and disintegrating an orbiting planet bit by bit.

©iStock.com

©iStock.com

The ill-fated planetary body and its debris are about the size of Texas or the dwarf planet Ceres, the largest asteroid in Earth’s solar system, and it will be fully destroyed within about a million years. Scientists watching the object disintegrate will get the best-ever view of a solar system’s death, researchers said—and a look at the likely future of our own system.

Scientists observed the crumbling planet using NASA’s Kepler space telescope and pulled out further detail through ground observation. This marks the first time scientists have ever seen a planetary body passing around a tiny, faint white dwarf (the planet’s destroyer), researchers report in a new study. [Infographic: How to Tell Star Types Apart]

“This is something no human has seen before,” Andrew Vanderburg, a graduate student at the Harvard-Smithsonian Center for Astrophysics and lead author of the new study, said in a statement. “We’re watching a solar system get destroyed.”

“What we’re seeing are fragments of a disintegrating planet that is being vaporized by [the white dwarf’s] starlight and is losing mass,” Vanderburg told Space.com. “The vapor is getting lost into orbit, and that condenses into dust which then blocks the starlight.”

Watching the dust from the decomposing object change the light from the white dwarf is a major milestone for understanding stars and the planets that orbit them, the researchers said.

Stellar mystery
As a star grows old, it balloons outward into a huge red giant, swallowing anything orbiting too close to it. Researchers say that, in the case of Earth’s solar system, the sun will grow to engulf Mercury, Venus and possibly Earth in about 5 billion years.

Eventually, an old star runs out of fuel; then, it sheds its massive outer envelope into space, and its core contracts into a small, dense white dwarf. (White dwarfs are the final form of stars close to our sun’s size, whereas much larger stars end in supernova explosions.)

 

 

Article continues:

http://www.scientificamerican.com/article/dying-star-destroys-a-dwarf-planet/

The strange star that has serious scientists talking about an alien megastructure – The Washington Post


“Aliens should always be the very last hypothesis you consider,” one astronomer told the Atlantic, “but this looked like something you would expect an alien civilization to build.”

Source: The strange star that has serious scientists talking about an alien megastructure – The Washington Post

Mars and the ‘mohawk guy’: Nasa basks in PR triumphs even as funding shrivels – Richard Luscombe Sunday 4 October 2015 07.00 EDT


Major discoveries and colorful characters are helping the agency launch a public-relations offensive as it seeks to maintain a record of impressive achievements on a shoestring budget

Bobak Ferdowsi has become one of Nasa’s best-known faces.

As space exploration goes, it looked like a good week for Nasa.

The revelation that scientists had discovered water on Mars – or more accurately uncovered evidence of certain chemicals in rocks that suggested recent liquid flows – piqued interest in the Red Planet ahead of this weekend’s launch of the sci-fi blockbuster The Martian.

If the announcement itself was cool enough, the messenger turned out to be pretty funky, too.

Lujendra Ojha, a postgraduate student at the Georgia Institute of Technology who made the discovery, is a Nepalese-born former heavy metal guitarist who is helping to change the public perception of a space agency geek.

Visitors to his personal website are greeted with an old photograph of a long-haired Ojha on stage and at the microphone with his death metal band Gorkha. Yet having chosen several years ago to pursue his studies in planetary science over a career in music, Ojha, 25, is still a rock star… as one of a generation of new “outsourced” young scientists helping to change the way the space agency presents its work in the social media era.

“You don’t have to have thick glasses and a skinny tie to be a Nasa scientist like back in the 1960s,” said Casey Dreier, director of advocacy at the Planetary Society. “You can be a guitarist; you can have all kinds of backgrounds to be included in space these days.”

Lujendra (Luju) Ojha, scientist and former metal guitarist.
Lujendra (Luju) Ojha, scientist and former metal guitarist. Photograph: Courtesy of Luju Ojha

For Nasa, which has increasingly embraced new media forms including Facebook and Twitter in recent years as it has sought to widen its appeal, colourful characters such as Ojha are a gift. Rocket engineer Bobak Ferdowski became an overnight sensation in 2012 as Nasa’s “Mohawk Guy”, his unorthodox haircut and bright clothes in mission control bringing extra welcome attention to the televised landing of the Mars Curiosity Rover.

Ojha’s position as one of a team of nine researchers funded, but not directly employed, by Nasa, also shines a spotlight on how the publicly funded federal agency pays for and conducts most of its science research through external contracts and arrangements.

While analysts, including Dreier, say there is nothing new in third-party partnerships – like the Georgia Tech-led study that brought the Mars water flow to prominence this week, and the work of astrophysicists at Johns Hopkins University that resulted in stunning close-up images of Pluto this summer from the New Horizons spacecraft – their importance to Nasa has never been greater.

“Nasa’s responsibility has increased as funding has diminished,” he said. “It’s a recurring joke around Nasa that they’re always having to pack 20lbs of ignition into a ten-pound bag.”

Budgetary wrangles have been a constant issue for Nasa since the years following the Apollo moon landings of the 1960s, when the space race accounted for almost 4.5% of the US federal budget. Funding has shrunk annually in real terms, and for 2016, President Obama has asked Congress to approve a budget of $18.5bn, half a percentage point of national spending and $4bn less than Americans spent on pet food last year.

Some space experts see Nasa’s recent public relations offensive as directly related to its need to secure future funding for the Mars programme, which includes the goal of manned exploration during the 2030s. Describing this week’s water-on-Mars announcement as the solving of a mystery, as Nasa did before its press conference, was “over-hyping”, according to John Logsden, a retired director of the Space Policy Institute and former member of Nasa’s advisory council.

“Preparing for humans-to-Mars is the rationale for Nasa’s human spaceflight programme, so in order to have the public support needed to sustain the programme, they fall into the long-established pattern of overselling,” he told the Washington Post. “The issue is whether the next president provides the startup funding for the next pieces of hardware that are required to do this. And at what point do we stop spending $3bn a year on the space station?”

Dreier, who coauthors his society’s monthly Planetary Report, agrees that finding the money for Mars, and the heavy-lift Space Launch System rockets and Orion capsules that will be needed to get there one day, will be an ongoing headache as Nasa’s administrator, former astronaut Charles Bolden, and senior leadership try to plot the course forward.

Dark, narrow, 100 meter-long streaks on Mars inferred to have been formed by contemporary flowing water are seen in a Nasa image.
Dark, narrow, 100 meter-long streaks on Mars inferred to have been formed by contemporary flowing water are seen in a Nasa image. Photograph: Nasa/Reuters

“Bolden has done a good job in turbulent political times,” he said. “It’s amazing what they do for the money they spend. Everything we’ve learned about Mars comes from 10% of the budget.

“In Congress, the biggest battles have been over earth science and commercial crew, endless back-and-forth over that. Then there’s SLS and Orion. It tells me that Nasa is being asked to do too much by the nation and isn’t given enough resources to be successful.

“It’s not like the 60s when the president shows up and says what he wants Nasa to do and doubles the budget two years in a row. We have to realise there’s no Kennedy moment coming up,” he added, referring to John F Kennedy’s game-changing 1962 speech at Rice University in Texas, during which he revealed the country’s commitment to a moon landing.

Essentially, according to Dr Mason Peck, Nasa’s former chief technologist and now a professor of mechanical and aerospace engineering at Cornell University, the eventual success of Nasa’s Mars endeavour relies on the pulling together of several key components. He said there needed to be the political will in Washington to see the job done combined with Nasa continuing to expand its scientific knowledge and develop new technologies with partners such as Ojha and his university team.

“You need experts to make science work, and that cannot reside within a few big Nasa centres around the country,” he said. “To be successful requires the will of the nation. There were some good people who put together Apollo, the same age then as today’s scientists are now. If Nasa was to stop doing the things that amaze us, then what’s the point?”