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Watch for a young moon this weekend

The young moon is back in the west after sunset. Very lovely, and passing near some bright stars in the days ahead.

Cassini dives between Saturn and its rings

The Cassini spacecraft made the first-ever dive through the narrow gap between the planet Saturn and its rings on Wednesday.

How Kepler saw Neptune

New video from NASA depicting the observations of our solar system’s 8th planet, Neptune, by the famous planet-hunting Kepler telescope.

Landslides on dwarf planet Ceres

A recent study shows that landslides are common on the dwarf planet Ceres and reinforces the idea that Ceres has a lot of water ice.

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Why birds smash into windows

Up to 1 billion birds die each year in the U.S. due to collisions with windows. Why do birds slam into windows, and what can you do to prevent it?

New Project Skyglow video and giveaway

The guys at Project Skyglow have done some amazing videos, and they have a new book out. It’s not too late to enter their giveaway, honoring International Dark Sky Week.

Northerners’ guide to Southern Cross

The Southern Cross climbs highest – due south – in the evening around now. Latitudes like Hawaii can see it. It’s possible to see from latitudes like the far-southern contiguous U.S., but difficult.

Use Southern Cross to find due south

From the Northern Hemisphere, a fairly bright North Star marks the direction north. From the Southern Hemisphere, the Southern Cross points the way south.

Star of the week: Hadar

Hadar, aka Beta Centauri, joins Alpha Centauri in pointing to the Southern Cross. It’s a triple system. Two of its stars will someday become nearby supernovae.

Why cats can’t resist (even a phony) box

Twitter has been blowing up with posts on cats’ attraction to taped squares on the ground. An animal behavior expert explains what draws Fluffy to the #CatSquare.

Happy World Penguin Day

Antarctica has 12 million penguins and 5 penguin species, according to a new report released today. But at least 2 penguin species have recently and significantly declined.

Cassini completes final, fateful Titan flyby

This was Cassini’s 127th Titan flyby. The craft passed at an altitude of about 608 miles (979 km) above the moon’s surface. Cassini is now in position for its daring Grand Finale.

This asteroid and comet look similar

Radar images of close-passing large asteroid 2014 JO25, which swept near last week, show it looks a lot like Comet 67P/Churyumov–Gerasimenko, which was explored by the Rosetta spacecraft.