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Perseid Meteors vs. the Supermoon
Perseid Meteors vs. the Supermoon
In a normal year, dark-sky observers typically count more than 100 Perseids per hour. But this is no normal year.Read More...
Rosetta Comet Comes Alive
Rosetta Comet Comes Alive
A spacecraft from Earth is about to do something no spacecraft has ever done before: orbit a comet and land on its surface.Read More...
A New Meteor Shower in May?
A New Meteor Shower in May?
The shower is the May Camelopardalids, caused by dust from periodic comet 209P/LINEAR. No one has ever seen it before, but this year the Camelopardalids could put on a display that rivals the well-known Perseids of August.Read More...
The Opposition of Mars
The Opposition of Mars
By the time you finish reading this story, you'll be about 1,000 km closer to the planet Mars.Read More...
Countdown to Pluto
Countdown to Pluto
Are we there yet? One of the fastest spacecraft ever built -- NASA's New Horizons -- is nearing its destination.Read More...
Comet ISON vs. the Solar Storm
Comet ISON vs. the Solar Storm
In 2007, astronomers were amazed when a solar storm hit comet Encke. The same thing could be in store for comet ISON -- only worse.Read More...
Two Comets to Fly By Mercury
Two Comets to Fly By Mercury
What are the odds? On Nov. 18th and 19th not one but two comets will fly by the planet Mercury.Read More...
Comet ISON: What's Next?
Comet ISON: What's Next?
Comet ISON is now inside the orbit of Earth as it plunges headlong toward the sun for a fiery close encounter on Nov. 28th. Although the comet is not yet as bright as many forecasters predicted, the comet is putting on a good show for observatories ...Read More...
MAVEN Solar Wind Electron Analyzer Seeks Answers at Microscopic Levels
MAVEN Solar Wind Electron Analyzer Seeks Answers at Microscopic Levels
When the Mars Atmosphere and Volatile Evolution Mission launches in November to study why the Red Planet is losing its atmosphere, one of its instruments will look to electrically charged particles called electrons for answers.Read More...
It's Complicated: Dawn Spurs Rewrite of Vesta's Story
It's Complicated: Dawn Spurs Rewrite of Vesta's Story
Just when scientists thought they had a tidy theory for how the giant asteroid Vesta formed, a new paper from NASA's Dawn mission suggests the history is more complicated.Read More...
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Last Updated: 29 Jul 2014