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Best image of Alpha Centauri A and B

29 August 2016 Astronomy Now

The NASA/ESA Hubble Space Telescope has given us this stunning view of the closest bright stars Alpha Centauri A (on the left) and Alpha Centauri B (on the right), at a distance of 4.3 light-years from the Earth. The Alpha Centauri group is completed by a faint red dwarf, Proxima Centauri (not shown), recently revealed to possess an Earth-like planet orbiting in its habitable zone.

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Lagoon Nebula by Ivan Eder

26 August 2016 Astronomy Now

New stars are formed in the undulating clouds of M8, also commonly referred to as the Lagoon Nebula. This image by Ivan Eder is one of the shortlisted images in this year’s Insight Astronomy Photographer of the Year competition.

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Dione: a moon of contrasts

22 August 2016 Astronomy Now

In this image from NASA’s Cassini spacecraft, Saturn’s moon Dione reveals its past via contrasts. The features visible here are a mixture of tectonics — the bright, linear features — and impact cratering — the round features, which are spread across the entire surface.

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Hubble views starbirth in an irregular galaxy

22 August 2016 Astronomy Now

This NASA/ESA Hubble Space Telescope image captures the glow of distant stars within NGC 5264, a dwarf galaxy located just over 15 million light-years away in the constellation of Hydra (The Sea Serpent). NGC 5264 clearly possesses an irregular shape — unlike the more common spiral or elliptical galaxies — with knots of blue star formation.