March 2017 – Astronomy Now

Gravitational wave kicks monster black hole out of galactic core

28 March 2017 Astronomy Now

Astronomers have uncovered a supermassive black hole that has been propelled out of the centre of a distant galaxy by what could be the awesome power of gravitational waves.

Juno orbiter races by Jupiter on fourth science pass

28 March 2017 Stephen Clark

NASA’s Juno spacecraft sailed over Jupiter’s cloud tops early Monday, the fourth time the solar-powered probe has approached the giant planet and collected science data since its arrival last July 4.

MAVEN data show thinning atmosphere drove the drying and cooling of Mars

28 March 2017 Stephen Clark

Data collected by NASA’s MAVEN spacecraft in its first two years at Mars confirm suspicions that the solar wind is blasting away the planet’s atmosphere and helped transform the world from a warmer, wetter and potentially habitable world into the barren landscape seen today, scientists said.

Dark Spot and Jovian ‘Galaxy’

26 March 2017 Astronomy Now

This image taken by NASA’s Juno spacecraft of a mysterious dark spot on Jupiter seems to reveal a Jovian “galaxy” of swirling storms.

See Mercury at its best in the evening sky

26 March 2017 Ade Ashford

Mercury attains a greatest easterly elongation of 19 degrees from the Sun on 1 April. This solar separation combined with a favourable inclination of the ecliptic to the western horizon an hour after sunset, means that the period 25 March to around 8 April offers the year’s best evening showing of the innermost planet for Northern Hemisphere observers.

Cratered Ceres

24 March 2017 Astronomy Now

This stunning view the cratered surface of dwarf planet Ceres comes from NASA’s Dawn spacecraft. Mission scientists believe water ice deposits exist in within some of the craters where parts are in permanent shade.

Andromeda’s bright X-ray mystery solved by NuSTAR

24 March 2017 Astronomy Now

The Milky Way’s closest neighbor, Andromeda, features a dominant source of high-energy X-ray emission, but its identity was mysterious until now. As reported in a new study, NASA’s NuSTAR mission has pinpointed an object responsible for this high-energy radiation.

Two weeks left to enter Insight Astronomy Photographer of the Year 2017

23 March 2017 Astronomy Now

With just over two weeks left to enter the Insight Astronomy Photographer of the Year 2017 competition, the Royal Observatory Greenwich has released a sneak peek at some of this year’s entrants.

Rosetta’s comet shows scars from swing through inner solar system

23 March 2017 Stephen Clark

Scientists examining imagery from Europe’s Rosetta spacecraft have logged numerous changes to the face of comet 67P/Churyumov-Gerasimenko, from collapsing cliffs to a growing crack through the comet’s neck that could foretell the eventual unraveling of the city-sized icy world.

NASA’s Swift mission maps a star’s ‘death spiral’ into a black hole

21 March 2017 Stephen Clark

Some 290 million years ago, a star much like the sun wandered too close to the central black hole of its galaxy. Intense tides tore the star apart, which produced an eruption of optical, ultraviolet and X-ray light that first reached Earth in 2014.