Astronomy Now Home
Home Magazine Sky Chart Resources Store

On Sale Now!



The April 2014 issue of Astronomy Now is on sale! Order direct from our store (free 1st class post & to UK addresses). The Astronomy Now iPad/iPhone editions are now available worldwide in the iTunes store.



Top Stories



Earthshine used to test life detection method
...By imagining the Earth as an exoplanet, scientists observing our planet's reflected light on the Moon with ESO's Very Large Telescope have demonstrated a way to detect life on other worlds...
  READ MORE

Solid buckyballs discovered in space
...Astronomers using NASA’s Spitzer Space Telescope have detected a particular type of molecule, given the nickname “buckyball”, in a solid form for the first time...
  READ MORE

Steamy water-world gets the Hubble treatment
...Hubble Space Telescope observations of a 7 Earth-mass planet find an unusual water-rich world swathed in a thick, steamy atmosphere...
  READ MORE








Brilliant star in a
colourful neighbourhood

by Lizzie Campbell
for ASTRONOMY NOW
Posted: 29 July 2010


Bookmark and Share

Hailing from La Silla Observatory, ESO has released a new image of the noteworthy star WR22, nestled in the picturesque setting of the outer reaches of the Carina Nebula.

This new image from ESO centres on Wolf-Rayet star WR22. The field-of-view is 0.55 x 0.55 degrees. Image: ESO.

The star is at least 70 times more massive than our own Sun and orbits with another star around the centre of mass between them. WR22 is one of the most massive Wolf-Rayet stars yet measured, and is so bright it can be tenuously seen unaided from Earth, despite residing over 5,000 light years away. These incredibly hot and luminous stellar beacons jettison their atmosphere much faster than our Sun does, due to fierce radiation invading their thick atmospheres.

This panoramic view combines a new image of the field around WR22 in the Carina Nebula (right) with an earlier view into the heart of the nebula (left). Image: ESO.

WR22 is surrounded by the exquisitely hued southern constellation of Carina. The nebula – a huge cloud of interstellar dust, hydrogen gas, helium gas and other ionized gases – serves as a home for newly forming stars and several star clusters. The colours and shades originate from interactions between intense ultraviolet radiation from WR22 and its more massive neighbours, and the expansive gas clouds that formed them.

The image was taken through red, green and blue filters with the Wide Field Imager on the MPG/ESO 2.2 metre telescope.

Hubble Reborn
Hubble Reborn takes the reader on a journey through the Universe with spectacular full-colour pictures of galaxies, nebulae, planets and stars as seen through Hubble's eyes, along the way telling the dramatic story of the space telescope, including interviews with key scientists and astronauts.
 U.K. STORE
 E.U. STORE
 U.S. & WORLDWIDE STORE

The Planets
From tiny Mercury to distant Neptune and Pluto, The Planets profiles each of the Solar System's members in depth, featuring the latest imagery from space missions. The tallest mountains, the deepest canyons, the strongest winds, raging atmospheric storms, terrain studded with craters and vast worlds of ice are just some of the sights you'll see on this 100-page tour of the planets.
 U.K. STORE
 E.U. STORE
 U.S. & WORLDWIDE STORE

3D Universe
Witness the most awesome sights of the Universe as they were meant to be seen in this 100-page extravaganza of planets, galaxies and star-scapes, all in 3D!
 U.K. STORE
 E.U. STORE
 U.S. & WORLDWIDE STORE


HOME | NEWS ARCHIVE | MAGAZINE | SOLAR SYSTEM | SKY CHART | RESOURCES | STORES | SPACEFLIGHT NOW

© 2014 Pole Star Publications Ltd.