News – Page 74 – Astronomy Now

Ageing Mars rover halts research, powers down in heavy dust storm

12 June 2018 Astronomy Now

NASA’s Opportunity Mars rover is powered down. science operations on hold, in a bid to weather a huge dust storm that is blocking the sunlight needed to re-charge the robot’s batteries and keep it from freezing.

Diamond dust may be source of unusual emissions

11 June 2018 Astronomy Now

Astronomers have detected microwave emissions from three protoplanetary disks that apparently are generated by vast clouds of tiny, spinning nanodiamonds, tiny motes of carbon found in star-forming regions

Curiosity rover finds more evidence of Martian habitability

8 June 2018 Astronomy Now

NASA’s Curiosity Mars rover has detected a wide range of organic compounds on the red planet along with signs of seasonal variations in background methane levels, a possible indicator of biological activity.

Mystery objects whizzing about in Milky Way’s core

8 June 2018 Astronomy Now

Spectrographic data indicates several unusual compact dusty objects are circling the supermassive black hole at the core of the Milky Way, the possible result of stellar mergers triggered by the hole’s titanic gravity.

X-rays, at least, no problem for planets orbiting Alpha Centauri AB

7 June 2018 William Harwood

More than a decade of observations shows any planets orbiting the two main stars in the nearby Alpha Centauri system are not being blasted by dangerous levels of radiation that would be hostile to life.

Lightning at Jupiter is just like Earth’s. Except where it’s not

6 June 2018 Astronomy Now

NASA’s Juno spacecraft finds lightning bolts in Jupiter’s atmosphere are similar to discharges on Earth, but they only occur at high latitudes thanks to the giant planet’s distance from the sun

New Horizons wakes up for New Year’s Day flyby

5 June 2018 Astronomy Now

NASA’s New Horizons probe, three years outbound from Pluto, has woken from electronic hibernation, healthy and on course for a New Year’s Day flyby of an even more remote Kuiper Belt object nicknamed Ultima Thule.

‘Planet Nine’ may not be needed to explain strange orbits

5 June 2018 Astronomy Now

Astronomers are searching for a presumed “Planet Nine” in the extreme outer solar system whose gravity could explain unusual orbits of several remote bodies. New research suggests Planet Nine may not be necessary.

Small asteroid tracked to atmospheric impact and breakup

4 June 2018 Astronomy Now

Detection of a small boulder-size asteroid hurtling toward Earth 2 June served as a real-world test of the advance warning systems in place to find, track and characterise potentially threatening bodies.

Dawn spacecraft dropping to record low altitude at Ceres

2 June 2018 Astronomy Now

NASA’s Dawn spacecraft is in the process of dropping into its final, lowest-ever orbit around the dwarf planet Ceres, allowing it to make repeated passes within 50 kilometres (30 miles) of the surface.