Read article 'Spitzer sees light from the very first stars'
Deep observations with NASA’s Spitzer Space Telescope have revealed infrared background anisotropies that can be attributed to emission from the very first stars in the universe. The diffuse glo...
Read article 'Do gamma rays reveal our galaxy’s dark matter?'
An observed excess of diffuse gamma rays traces the distribution of dark matter in our galaxy through its annihilations. Wim de Boer describes a recent analysis of the data.
Read article 'Gamma-ray bursts: a look behind the headlines'
Has the 35 year old mystery regarding gamma-ray bursts really been solved, and are recent observations really a complete surprise? Arnon Dar thinks not.
Read article 'Uppsala 2005: leptons, photons and a lot more'
The biennial Lepton-Photon conference was held in Uppsala on 30 June - 5 July. The talks erected the impressive edifice known as the Standard Model and showed that experimental ingenuity has not yet s...
Read article 'VLT astronomers discover new population of distant galaxies'
A team using the Very Large Telescope (VLT) of the European Southern Observatory (ESO) has identified a much larger population of distant galaxies than previously estimated. The new population mainly ...
Read article 'MAGIC and Swift capture GRB'
The MAGIC telescope observed a gamma-ray burst seconds after its explosion was detected by NASA's Swift satellite.
Read article 'Swift catches afterglows of gamma-ray bursts'
The ability of NASA’s Swift satellite to point its X-ray telescope rapidly towards gamma-ray bursts is, for the first time, allowing the study of the afterglow phase a minute or so after the act...
Read article 'Foundations of Modern Cosmology (Second Edition)'
The new edition of this thorough, descriptive introduction to the physical basis for modern cosmological theory includes the latest observational results and provides the background material necessary...
Read article 'Astronomers discover possible 10th planet'
A planet larger than Pluto has been discovered orbiting the Sun at more than three times the current distance from the Sun to Pluto. It is a clear member of the Kuiper belt of objects beyond the orbit...
Read article 'Theory demystifies supermassive black holes'
The existence of powerful quasars at high redshift raises the question of the rapid formation of supermassive black holes. How could early black holes accrete 1 billion solar masses in less than 1 bil...
