Cosmic visions
With the International Year of Astronomy now in full swing, leading figures from the world of astronomy reveal what they think are the biggest challenges for the subject
Evidence mounts for axion-like particles
Are 'luminosity relations' a key piece in an intergalactic puzzle?
Chameleon particle blends into the background
Fermilab experiment puts limit on dark-energy candidate
Read article: Chameleon particle blends into the background
PAMELA paper dampens dark-matter claim
Antiparticle mystery continues
Not wrapped up yet
Is the universe multiply connected? wonders Andrew Jaffe
Read article: Not wrapped up yet
Reasons to be cheerful
The economy may be in a nosedive but there is plenty to look forward to in science this year
Read article: Reasons to be cheerful
Is a new force at work in the dark sector?
New theory tries to explain latest dark-matter search results
Europe unveils 20-year astronomy roadmap
Funding must rise by 20% per year to meet ambitious goals
Read article: Europe unveils 20-year astronomy roadmap
Excess of electrons could point to dark matter
Are WIMPs annihilating nearby?
Read article: Excess of electrons could point to dark matter
Galaxy survey casts doubt on cold dark matter
Are galaxies simpler than we thought?
Read article: Galaxy survey casts doubt on cold dark matter
