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Editors of EarthSky

Sea-level rise underestimated by half?

A new study suggests that sea-level rise over the next 100 years could be nearly double earlier estimates.

Oddball hot Jupiter has wildly eccentric orbit

Researchers have studied how the exoplanet’s temperature changes as it approaches, sweeps by, and moves away from its star.

Searching for shipwrecks from space

A new study uses satellite images to detect ships' watery graves.

Best view yet inside Mars

Scientists have used fluctuations in the orbits of 3 spacecraft to map Mars' gravity. Thanks to this gravity map, it now seems likely that Mars has a molten core.

Astronomers see black hole raging red

Astronomers have observed violent red flashes, lasting just fractions of a second, during one of the brightest black hole outbursts in recent years.

See Earth in Mars’ night sky

If you were standing on Mars, you could see Earth and the moon as two bright evening or morning "stars." A Mars rover captured this image of Earth in Mars' sky.

Are solar eclipses more common than lunar eclipses?

It's sometimes said that, on a worldwide scale, solar eclipses outnumber lunar eclipses by about a three to two margin. True?

Black holes banish matter into cosmic voids

Using a computer simulation, astronomers probe the 'cosmic web' of the universe, its honeycomb-like structure on the largest scales.

First animal was likely sea sponge

A new genetic analysis suggests that the first animal to appear on Earth was very likely the simple sea sponge.

Multiple cosmic impacts 790,000 years ago

Geoscientists reached this conclusion after dating glassy stones called tektites from various parts of the world.