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Sun emits significant solar flare

12 March 2015 Astronomy Now

On March 11th at 4:22 pm GMT, the Sun emitted a powerful solar flare that registered 2.2 on the X-class scale. NASA’s Solar Dynamics Observatory captured the event in stunning detail.

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Venus revealed in high-resolution radar images from Earth

10 March 2015 Astronomy Now

By combining the powerful radar transmitter of the Arecibo Observatory and the Green Bank Telescope (GBT) — the world’s largest fully steerable radio telescope — astronomers were able to penetrate the visually opaque atmospheric veil of Venus to make remarkably detailed images of the surface of the planet without leaving Earth.