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Astronomy

ALMA Starts Observing the Sun

Click for a full size image ALMA observes a giant sunspot (1.25 millimetres) This ALMA image of an enormous sunspot was taken at a wavelength of 1.25 millimetres. Sunspots are transient features that occur in regions where the Sun’s magnetic ...

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Rolling on the (Atmospheric) River

A series of atmospheric rivers that brought drought-relieving rains, heavy snowfall and flooding to California this week is highlighted in a new movie created with satellite data from the Atmospheric Infrared Sounder (AIRS) instrument on NASA’s Aqua satellite. Image credit: ...

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What does ‘habitable’ really mean?

This artist’s impression shows the planet Proxima b orbiting the red dwarf star Proxima Centauri. Proxima b is a little more massive than the Earth and orbits in the habitable zone around Proxima Centauri, where the temperature is suitable for ...

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How old is our moon?

Right side of the moon. NASA/Goddard Space Flight Center Scientific Visualization Studio Click for a full size image   How old is our moon? Most scientists agree that the Earth has pretty much always had its moon. Details of the ...

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Black Holes Hide in Our Cosmic Backyard

NGC 1448, a galaxy with an active galactic nucleus hidden by gas and dust, is seen in this image. Image credit: Carnegie-Irvine Galaxy Survey/NASA/JPL-Caltech Click for a full size image   Black Holes Hide in Our Cosmic Backyard Monster black ...

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Trump Might Be Thinking About a Moon Base

Click for a full size image   Trump Might Be Thinking About a Moon Base Here’s why that’s a bad idea. Last week, upon leaving the president-elect’s office, Douglas Brinkley, a historian and conservationist, reported that Trump “was very interested ...

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Your Home Planet, as Seen From Mars

Here is a view of Earth and its moon, as seen from Mars. It combines two images acquired on Nov. 20, 2016, by the HiRISE camera on NASA’s Mars Reconnaissance Orbiter, with brightness adjusted separately for Earth and the moon ...

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