News – Page 106 – Astronomy Now

NASA resumes JWST vibration testing

25 January 2017 Stephen Clark

Vibration testing on the James Webb Space Telescope, the multibillion-dollar successor to Hubble, has resumed after engineers traced a problem that cropped up last month to a restraint holding part of the observatory’s giant segmented mirror in place for launch.

China sets November launch for lunar sample return mission

25 January 2017 Stephen Clark

China plans to launch a robotic mission to return samples from the lunar surface, the first such mission in four decades, in November on top of the country’s new heavy-lift Long March 5 rocket, according to state media reports.

NuSTAR finds new clues to ‘chameleon supernova’

25 January 2017 Stephen Clark

“We’re made of star stuff,” astronomer Carl Sagan famously said. Nuclear reactions that happened in ancient stars generated much of the material that makes up our bodies, our planet and our solar system. When stars explode in violent deaths called supernovae, those newly formed elements escape and spread out in the universe.

Our galaxy’s black hole is spewing out planet-size ‘spitballs’

23 January 2017 Stephen Clark

Every few thousand years, an unlucky star wanders too close to the black hole at the center of the Milky Way. The black hole’s powerful gravity rips the star apart, sending a long streamer of gas whipping outward. That would seem to be the end of the story, but it’s not. New research shows that not only can the gas gather itself into planet-size objects, but those objects then are flung throughout the galaxy in a game of cosmic “spitball.”

Japanese spacecraft spots planet-spanning wave on Venus

22 January 2017 Stephen Clark

Images from Japan’s Akatsuki spacecraft have revealed a gigantic wave in the atmosphere of Venus, and scientists say it may be the largest such feature in the solar system.

New Horizons to continue mission of discovery with Kuiper Belt encounter

22 January 2017 Stephen Clark

Scientists planning the the next phase of NASA’s New Horizons mission, a robotic craft that completed the first exploration of Pluto in 2015, are going into the flyby of a frozen, faraway city-sized clump of rock on New Year’s Day 2019 armed with little knowledge of the target lurking around 4 billion miles from Earth.

Future of asteroid deflection mission to be decided soon

20 January 2017 Stephen Clark

Decisions on the future of a joint robotic mission between NASA and the European Space Agency to demonstrate the ability to deflect an asteroid on a collision course with Earth have been put off until later this year after European governments declined to fully fund their part of the project in December.

Saturn’s shepherd moon Daphnis makes waves

19 January 2017 Stephen Clark

NASA’s Cassini spacecraft has captured the first close-up view of Daphnis, one of at least 62 moons found orbiting Saturn, plowing a path through the planet’s icy rings and raising waves in its wake.

ALMA starts observing the Sun

17 January 2017 Stephen Clark

New images taken with the Atacama Large Millimeter/submillimeter Array in Chile have revealed otherwise invisible details of our Sun, including a new view of the dark, contorted centre of a sunspot that is nearly twice the diameter of the Earth.

Skywatchers: Get your Iridium flare fix now

16 January 2017 Stephen Clark

The launch of the first batch of new-generation Iridium communications satellites Saturday marked the beginning of the end for the predictable, spectacular flares of reflected sunlight produced by the old-design craft, a favorite of amateur skywatchers for nearly two decades.