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3,045 articles from NASA


TUESDAY 18. NOVEMBER 2014


The Rosetta Bounce, Before and After

Images taken by the Rosetta spacecraft's OSIRIS imaging system show the portions of the journey its Philae comet lander undertook on Nov. 12, as it approached and then rebounded off the surface of comet 67P/Churyumov-Gerasimenko.


MONDAY 17. NOVEMBER 2014


New Geological Maps of Asteroid Vesta

Images from NASA's Dawn Mission have been used to create a series of high-resolution geological maps of the large asteroid Vesta, revealing the variety of surface features in unprecedented detail. These maps are included with a series of 11 scientific papers published this week in a special issue of the journal Icarus.


SUNDAY 16. NOVEMBER 2014


Small Asteroids Hit Earth More … Often Than You Think

A map released by NASA's Near Earth Object (NEO) Program reveals that small asteroids frequently enter and disintegrate in the Earth's atmosphere with random distribution around the globe. Released to the scientific community, the map visualizes data gathered by U.S. government sensors from 1994 to 2013.


THURSDAY 6. NOVEMBER 2014



MONDAY 3. NOVEMBER 2014


How to Land on a Comet

The European Space Agency's Rosetta probe is about to attempt something "ridiculously difficult"--landing a probe on the surface of a speeding comet.


FRIDAY 31. OCTOBER 2014


Rosetta Comet Scrambles its Jets

As the European Space Agency prepares to drop a lander on Comet 67P/Churyumov-Gerasimenko on Nov. 12th, the comet is showing signs of increased activity. splash

2014 Ozone Hole Update

The Antarctic ozone hole reached its annual peak size on Sept. 11, according to scientists from NASA and the National Oceanic and Atmospheric Administration (NOAA). The size of this year’s hole was 24.1 million square kilometers (9.3 million square miles) — an area roughly the size of North America.


THURSDAY 23. OCTOBER 2014


Hubble Sees Comet Next to Mars

NASA’s Hubble Space Telescope has produced a unique composite image of comet Siding Spring as it made its never-before-seen close passage of a comet by Mars.


SATURDAY 18. OCTOBER 2014


Sunset Solar Eclipse

On October 23rd, the Moon will pass in front of the sun, off-center, producing a partial solar eclipse visible in most of the United States.


FRIDAY 17. OCTOBER 2014


2014 Orionid Meteor Shower

Earth is entering a stream of debris from Halley's Comet, parent of the annual Orionid meteor shower. Forecasters expect the shower to peak on Tuesday, Oct. 21st.

Where will New Horizons Go After Pluto?

Peering out to the dim, outer reaches of our solar system, NASA’s Hubble Space Telescope has uncovered three Kuiper Belt objects (KBOs) the agency’s New Horizons spacecraft could potentially visit after it flies by Pluto in July 2015.


WEDNESDAY 15. OCTOBER 2014


The Cloudy Future of Arctic Sea Ice

As climate change continues to hammer Arctic sea ice, pushing back its summertime boundaries to record-high latitudes, NASA is flying an innovative airborne mission to find out how these developments will affect worldwide weather.


MONDAY 13. OCTOBER 2014


Evidence for Young Lunar Volcanism

NASA's Lunar Reconnaissance Orbiter has found strong evidence of geologically young volcanic activity on the moon. Some deposits appear to be less than 100 million years old, corresponding to Earth's Cretaceous period, the heyday of dinosaurs.


FRIDAY 10. OCTOBER 2014


First Light for MAVEN

NASA's MAVEN spacecraft has reached Mars and it is beaming back "First Light" images of the Red Planet's upper atmosphere. The data could help researchers understand what transformed Mars from a hospitable planet billions of years ago into a desiccated wasteland today.


THURSDAY 9. OCTOBER 2014


U.S. Methane 'Hot Spot' Bigger than Expected

According to a new study of satellite data, the largest concentration of the greenhouse gas methane over the USA is located in a single hot spot near the Four Corners intersection of Arizona, Colorado, New Mexico and Utah. The concentration of methane revealed from Earth orbit more than triples standard ground-based estimates.


WEDNESDAY 8. OCTOBER 2014


Antarctic Sea Ice Reaches New Record Maximum

Sea ice surrounding Antarctica reached a new record high extent this year, covering more of the southern oceans than it has since scientists began a long-term satellite record to map sea ice extent in the late 1970s. The upward trend in the Antarctic, however, is only about a third of the magnitude of the rapid loss of sea ice in the Arctic Ocean.


MONDAY 6. OCTOBER 2014



WEDNESDAY 24. SEPTEMBER 2014


A Giant Among Earth Satellites

The launch of ISS-RapidScat onboard SpaceX-4 has kickstarted a new era for the International Space Station as a giant Earth-observing satellite.


TUESDAY 23. SEPTEMBER 2014


2014 Arctic Sea Ice Minimum Sixth … Lowest on Record

Arctic sea ice coverage hit its annual minimum on Sept. 17, continuing a trend of below-average years. According to the NASA-supported National Snow and Ice Data Center, Arctic sea ice coverage in 2014 is the sixth lowest recorded since 1978.


MONDAY 22. SEPTEMBER 2014


NASA's MAVEN Spacecraft Reaches Mars

On Sunday, Sept. 21st, NASA's MAVEN spacecraft successfully entered Mars orbit where it now will prepare to study the Red Planet's upper atmosphere as never done before.


THURSDAY 18. SEPTEMBER 2014


Colorful Lunar Eclipse

Mark your calendar: On Oct. 8th, the Moon will pass through the shadow of Earth for a total lunar eclipse. Sky watchers in the USA will see the Moon turn a beautiful shade of celestial red and maybe turquoise, too.


WEDNESDAY 10. SEPTEMBER 2014


Jellyfish Flames on the ISS

Astronauts onboard the International Space Station report seeing flames that behave like jellyfish. Video of the microgravity phenomenon is a must-see.