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Hiding in plain sight: The mystery of the sun’s missing matter

A mass equivalent to 1500 Earths has vanished from the sun. Tracking it down could transform how we see the stars

Space greens beat the blues

Where people will go in the cosmos, plants will go. That's the message of a paper titled "Gardening for Therapeutic People-Plant Interactions during Long-Duration Space Missions" written by Raymond Odeh, and Charles L. Guy of the University of Florida (Gainesville) and published in the De Gruyter journal Open Agriculture.

Orionid Meteor Shower, Morning 21-23 October 2017

Morning sky as seen from Adelaide facing north-east at 4:00 am ACDST on 22 October, the Orionid radiant is indicated with a starburst. Similar views will be seen elsewhere in Australia at an equivalent local time. Click to embiggen.The...Show More Summary

Hubble studies source of gravitational waves

On Aug. 17, 2017, weak ripples in the fabric of space-time known as gravitational waves washed over Earth. Unlike previously detected gravitational waves, these were accompanied by light, allowing astronomers to pinpoint the source. NASA's Hubble Space Telescope turned its powerful gaze onto the new beacon, obtaining both images and spectra. Show More Summary

Speeding up cancer screening

Delivering breast cancer screening results in a day instead of today’s standard two weeks is being proposed by an ESA incubator start-up company using paperless technology and online image transfers. Screening vans are already on the streets.

Astronaut wee could show us how the plumes on Enceladus work

The way spaceships vent urine and water may be a good stand-in for studying how jets of vapour escape the hidden ocean on one of Saturn’s icy moons

A gaggle of 7 moons keep Saturn’s rings from breaking apart

The gravity from seven of its moons stops Saturn’s bright outer ring from spreading out and dispersing into space, according to Cassini spacecraft measurements

Earth's new traveling buddy is definitely an asteroid, not space junk

At the 49th Annual Division for Planetary Sciences Meeting in Provo, Utah, astronomers led by Vishnu Reddy at the University of Arizona confirm true nature of one of Earth's companions on its journey around the sun.  

In search of the ninth planet

A University of Michigan doctoral student has logged two pieces of evidence that may support the existence of a planet that could be part of our solar system, beyond Neptune.

Researchers and supercomputers help interpret the latest LIGO findings

Astrophysicist Chris Fryer was enjoying an evening with friends on August 25, 2017, when he got the news of a gravitational-wave detection by LIGO, the Laser Interferometer Gravitational-wave Observatory. The event appeared to be a merger...Show More Summary

Space2Health: the hackathon

What better way to show your love of science than entering a hackathon? Organised by the Merck science and technology company, alongside ESA, the Space2Health hackathon recently attracted a set of talented individuals who crunched numbers in a 24-hour event to find the best solution to one of the set challenges.

"New Era of Astronomy" --Ushered In By 1st Observation of a 130-Million-Year Old Neutron Star Collision (WATCH Video)

"This is a huge discovery," said Ryan Foley at UC Santa Cruz. "We're finally connecting these two different ways of looking at the universe, observing the same thing in light and gravitational waves, and for that alone this is a...        

Study shows how water could have flowed on 'cold and icy' ancient Mars

For scientists trying to understand what ancient Mars might have been like, the red planet sends some mixed signals. Water-carved valleys and lakebeds leave little doubt that water once flowed on the surface. But climate models for early Mars suggest average temperatures around the globe stayed well below freezing.

Study shows how water could have flowed on 'cold and icy' ancient Mars

(Brown University) Research by planetary scientists at Brown University finds that periodic melting of ice sheets on a cold early Mars would have created enough water to carve the ancient valleys and lakebeds seen on the planet toda...

"Unlocking Saturn's Secrets" --NASA's Cassini-Mission Scientists Recap Their Amazing Discoveries (WATCH Today's 'Galaxy' Stream)

NASA's Cassini spacecraft ended its journey on Sept. 15 with an intentional plunge into the atmosphere of Saturn, but analysis continues on the mountain of data the spacecraft sent during its long life. Some of the Cassini team's freshest insights...        

Crashing neutron stars observed for the first time

(Weizmann Institute of Science) An international research team, including physicists from the Weizmann Institute of Science, has for the first time succeeded in observing a merger of two colliding neutron stars. The merger was simultaneously...Show More Summary

The Alien Observatory --The Search for Human-like Intelligence: "Extremely Rare or Common in the Milky Way?" (WATCH Video)

"We should not expect to see any other forms of life that are genetically, functionally and intellectually similar to us." says Charles Lineweaver, a noted astrobiologist at the Australian National University. "I strongly suspect that our closest relatives in the...        

The Sky This Week - Thursday October 19 to Thursday October 26

The New Moon is Friday, October 20. Jupiter is lost in the twilight. Mercury returns low in the evening twilight, and is near the Moon on the 21st. Saturn is visible most of the evening in the heart of the Milky Way. Saturn is visited by the Moon on the 24th. Show More Summary

Icarus lifts off

After the launch of a Soyuz 2 rocket scheduled for October 12 was postponed by two days, the carrier rocket yesterday docked with the ISS. On board: the Icarus board computer, the future brain of the German-Russian animal observation system.

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