Fly-by captures first comet photos
A spacecraft has successfully conducted a close fly-by of the comet Hartley 2, providing the most extensive observations of a comet ever.
Comets are thought to be the
Dead quasar's ghostly glow reignites debate
A new study of a strange green glowing object in intergalactic space has supported the theory that it's the ghostly glow of a long-dead quasar.
The finding has given
Stars let us see the light
Astronomers say it was the first stars and galaxies, rather than black holes or elemental particle decay, which gave us the universe we have today.
Looking at the late
Cosmic rays trace Sun's journey through space
Scientists may have a new tool to help them work out what sort of environment the solar system's been experiencing during its journey through our galaxy, the Milky Way.
Globular clusters more than one-off event
Scientists have uncovered a previously unknown generation of stars hidden within globular clusters.
The discovery reported in this week's
Earth-like planets may be common
One out of four Sun-like stars in the Milky Way galaxy could host Earth-size planets, making life-bearing systems like ours possibly more common than previously thought, say U...
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