Their new study shows that Earth’s massive drop in temperature after the dinosaurs went extinct could have been caused by a large drop in calcium levels in the ocean. The study showed that the ...

Every January, a tight-knit clutch of families and friends head for a barren, disused area of Cape Canaveral to reflect and remember. With almost religious reverence, they lay bright splashes of ...

If you were to take a random blob of gas and heat it to solar temperatures (roughly 10,000 degrees Fahrenheit [5,500 degrees Celsius] at the surface or over 27 million F [15 million C] in the core), ...

Karen Meech doesn’t spend a lot of time digging through Earth’s rocks. An astronomer by trade, she is usually behind the telescope, investigating comets and looking for hints about how Earth got its ...

Astronomers have known for decades that the universe is expanding. When they use telescopes to observe faraway galaxies, they see that these galaxies are moving away from Earth. To astronomers, the ...

The long nights of December are an astronomical delight. The early evening sky hosts Saturn as the main feature, along with Uranus and Neptune. Jupiter rises later and is visible all night, its four ...

David Eicher is one of the most widely recognized astronomy enthusiasts in the world. He has been with Astronomy magazine for 36 years, beginning as an assistant editor and working through associate, ...

Three weeks after the Spirit rover touched down on Mars, its twin rover, Opportunity, landed on the opposite side of the Red Planet. Its descent was known at NASA as the “six minutes of terror,” ...

Saturn is on display in the early-evening sky this month along with Uranus and Neptune, both within reach of binoculars. Jupiter dominates the night, reaching opposition on the 10th. The gas giant is ...

Summer nights offer lots of interesting sights this month. Mercury and Mars are on show in the evening twilight. Both Uranus and Neptune stand near brighter beacons: Neptune and Saturn are two ...

Astronomy magazine: 50 years and counting The world's best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each issue includes ...

As humans have evolved on Earth, many naturally occurring events — earthquakes, volcanoes, destructive weather — have struck fear into their hearts. At the top of the list, I contend, is the ...