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3,045 articles from NASA


MONDAY 9. MAY 2011



FRIDAY 6. MAY 2011


A Story from the Tornado Zone

On Wednesday, April 27th, Science@NASA writer Dauna Coulter found herself near ground zero as a super-outbreak of tornadoes ripped through North Alabama. This is the story about the science of the event she wrote and submitted from within the disaster zone.


WEDNESDAY 4. MAY 2011



THURSDAY 28. APRIL 2011


Voyager, The Love Story

NASA's Voyager probes are at the edge of the solar system carrying a surprising message from Earth to possible extraterrestrial civilizations.


WEDNESDAY 27. APRIL 2011


Meteors from Halley's Comet

Mark your calendar. On May 6th, Earth will pass through a stream of debris from Halley's comet, producing a mild but beautiful meteor shower known as the "eta Aquarids."


FRIDAY 22. APRIL 2011



THURSDAY 14. APRIL 2011


Solar Activity Heats Up

No, it's not your imagination. Solar activity really is picking up, bringing an end to a century-class solar minimum.


THURSDAY 7. APRIL 2011



THURSDAY 31. MARCH 2011


Spring is Fireball Season

For reasons researchers do not understand, the rate of midnight fireballs increases during the weeks around the vernal equinox. It's a beautiful display, but where do they come from? NASA's growing network of fireball cameras is scanning the heavens for answers.


WEDNESDAY 30. MARCH 2011



FRIDAY 18. MARCH 2011


Historic First: A Spacecraft Orbits Mercury

NASA’s MESSENGER spacecraft successfully achieved orbit around Mercury at approximately 9 p.m. EDT on March 17th. This marks the first time a spacecraft has orbited the solar system's innermost planet.


WEDNESDAY 16. MARCH 2011


Super Full Moon

On March 19th, a full Moon of rare size and beauty will rise in the east at sunset. It's a super "perigee moon"--the biggest in almost 20 years.


TUESDAY 15. MARCH 2011



MONDAY 14. MARCH 2011


See Mercury at Sunset

This week, sky watchers have a rare opportunity to see Mercury at its best as NASA's MESSENGER probe prepares to enter orbit around the innermost planet.


WEDNESDAY 2. MARCH 2011



TUESDAY 1. MARCH 2011


What's Hitting Earth?

Have you ever seen a fireball streak through the night sky and gone to bed wondering, "What was that?" NASA is deploying a network of smart cameras that could have an answer waiting for you when you wake up.


THURSDAY 24. FEBRUARY 2011



FRIDAY 11. FEBRUARY 2011


SDO Sundog Mystery

Last year, NASA's Solar Dynamics Observatory amazed observers when it destroyed a sundog en route to orbit. A new analysis of the event is shedding light on the way rocket shock-waves interact with clouds.


WEDNESDAY 9. FEBRUARY 2011



SUNDAY 6. FEBRUARY 2011


First Ever STEREO Images of the Entire Sun

On Super Sun-day, NASA's STEREO spacecraft moved into position to photograph the entire sun--front and back. Researchers say this is a transforming moment in solar physics that could lead to big advances in space weather forecasting.


TUESDAY 1. FEBRUARY 2011


Watch Out for Solar Sail Flares

NASA's first Earth-orbiting solar sail, NanoSail-D, is circling our planet and attracting the attention of sky watchers. Occasionally, sunlight glinting from the sail's reflective fabric produces a flash of light in the night sky. These "solar sail flares" are expected to grow brighter as NanoSail-D descends in the weeks ahead.


MONDAY 31. JANUARY 2011



WEDNESDAY 26. JANUARY 2011


A Fizzy Ocean on Enceladus

Evidence is mounting that Saturn's moon Enceladus harbors a bubbly subterranean ocean where conditions might be friendly to life.