EarthSky News - Sept 30 - Top Stories This Week

September 30 Top Stories This Week by:

Giant iceberg on the move There's a cool animation showing this iceberg's drift away from Antarctica’s Larsen C ice shelf here. Fast radio bursts firing every second? New theoretical work indicates at least 1 fast radio burst, or FRB, going off somewhere each second. How fast is our universe expanding? New video about the controversial Hubble Constant - key to knowing the age of our universe and much more. Is the Milky Way a normal galaxy? Astronomers use knowledge of our Milky Way to understand the rest of the universe. But is the Milky Way typical? Did dino-killing asteroid speed bird evolution? Study suggests the asteroid that wiped out the dinosaurs increased the pace of evolution in their only remaining descendants - birds. Passing spacecraft snaps Earth pics The OSIRIS-REx spacecraft received a gravity boost from Earth on September 22, in the process creating this new Earth portrait. Why don’t poison frogs poison themselves?    Scientists are a step closer to resolving this head-scratcher.  Moon's near side is its dark side Believe it or not, the moon's near side is its dark side, thanks to a collection of low-lying lunar plains, solidified remnants of ancient seas of molten magma.

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Autumn arrives in Colorado Hello autumn! Manish Mamtani captured this aerial view on September 24, 2017 - two days after the September equinox. Do you have a photo of autumn's arrival this year at your location? Or ... Southern Hemisphere spring? Submit your photo here.

Near side of the moon In terms of reflectivity, the moon’s near side is its darker side, because of the dark low-lying plains, or maria, on this side. See if you can make out the dark areas on tonight’s waxing gibbous moon. Submit your photo to EarthSky here!

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EarthSky News - Sept 29 - Is the Milky Way Normal?

September 29 Is the Milky Way Normal? by:

Is the Milky Way a normal galaxy? Astronomers assume our Milky Way galaxy is typical. They use our knowledge of it to leapfrog out to understanding the rest of the universe. But is the Milky Way typical? Every visible star is within Milky Way It's not too late to spot the starlit band of our Milky Way galaxy in the evening. Space visionaries boost Pluto lander At a NASA symposium this week, space scientists and engineers presented an exciting new concept for a lander that would explore Pluto by "hopping" across its surface. Friday FAQ: Why don’t poison frogs poison themselves?    Scientists are a step closer to resolving this head-scratcher. And their findings have potential consequences for the fight against pain and addiction.

EarthSky t-shirt's are back EarthSky is happy to announce our latest initiative EarthSky Cares. A percentage of proceeds collected through this sale will be donated to select organizations. Click here to help us make a difference in our world today!

Every visible star is within Milky Way On any night, any time of year, every star you see belongs to our Milky Way galaxy.

Night sky from sea caves Jack Fusco Photography captured this image from a sea cave in Malibu, California. The glow on the ocean is bioluminescence, a biochemical light from sea creatures, the sea-going equivalent of firefly light. See another cool shot from a sea cave, here.   Submit your photo to EarthSky here!

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