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Minisat's snowy north

Technology image of the week: snow-dusted Norwegian fjords imaged by ESA’s Earth-observing Proba-V minisatellite

The first woman in space: 'People shouldn’t waste money on wars'

In 1963 Valentina Tereshkova became the first woman to go into space. On her 80th birthday, she looks back at a lifetime of immense political change Parachuting was her first love. The moment she could, Valentina Tereshkova joined the...Show More Summary

Subaru telescope detects shadow of gas cloud in ancient proto-supercluster

A team led by researchers from Osaka Sangyo University, with members from Tohoku University, Japan Aerospace Exploration Agency (JAXA) and others, has used the Suprime-Cam on the Subaru Telescope to create the most-extensive map of neutral hydrogen gas in the early universe. Show More Summary

NASA spacecraft investigate clues in radiation belts

High above Earth, two giant rings of energetic particles trapped by the planet's magnetic field create a dynamic and harsh environment that holds many mysteries—and can affect spacecraft traveling around Earth. NASA's Van Allen Probes...Show More Summary

Final two ExoMars landing sites chosen

Two ancient sites on Mars that hosted an abundance of water in the planet’s early history have been recommended as the final candidates for the landing site of the 2020 ExoMars rover and surface science platform: Oxia Planum and Mawrth Vallis.

Climate at your fingertips

Discover our planet’s changing climate through the eyes of satellites with Climate from Space, a new digital book for iPad and Android tablets featuring interactive maps and video interviews with top scientists.

Hanging with Dextre

Human spaceflight and robotic exploration Image of the week: ESA astronaut Thomas Pesquet during his second spacewalk

Sentinel-2B timelapse

A look back on the preparations for the 7 March liftoff of Sentinel-2B

Your hypothetical questions, answered: SpaceX prepares to refly rocket booster

A SpaceX Falcon 9 rocket booster recovered by a drone ship last year will be reflown later this week, marking what could be a new milestone in the quest for affordable spaceflight.

New treasures from Juno: Jupiter dazzles during fourth close approach

Image processor Björn Jónsson shares some of his latest stunning images of Jupiter, created using data from NASA's Juno spacecraft.

Igniting a solar flare in the corona with lower-atmosphere kindling

Scientists from NJIT's Center for Solar-Terrestrial Research are providing some of the first detailed views of the mechanisms that may trigger solar flares, colossal releases of magnetic energy in the Sun's corona that dispatch energized...Show More Summary

James Webb space telescope completes acoustic and vibration tests

At NASA's Goddard Space Flight Center in Greenbelt, Maryland the James Webb Space Telescope team completed the acoustic and vibration portions of environmental testing on the telescope. These tests are merely two of the many that spacecraft and instruments endure to ensure they are fit for spaceflight.

New outbursts detected in a peculiar, active dwarf nova MN Draconis

(Phys.org)—A team of astronomers led by Karolina B?kowska of the Nicolaus Copernicus Astronomical Center in Warsaw, Poland, has discovered several new outbursts in a peculiar, active dwarf nova known as MN Draconis. The results of new observations, which could provide better understanding of dwarf novae in general, were published Mar. 20 in a paper on arXiv.org.

New Zooniverse project—muon hunter

A new citizen science project, led by Associate Professor Lucy Fortson, is asking for help from the public to identify and categorize hundreds of thousands of ring patterns within images produced by VERITAS gamma-ray observatory cameras.

Image: Mysterious Jovian dark spot

This enhanced-color image of a mysterious dark spot on Jupiter seems to reveal a Jovian "galaxy" of swirling storms.

NuSTAR probes puzzling galaxy merger

A supermassive black hole inside a tiny galaxy is challenging scientists' ideas about what happens when two galaxies become one.

New, highly accurate positions and motions available for millions of stars

The United States Naval Observatory (USNO) has released a new catalog of over 107 million stars, the 5th USNO CCD Astrograph Catalog (UCAC5). This catalog of about 5.5 gigabytes of binary data is currently available from the German Astrophysical Virtual Observatory (GAVO) Data Center. Show More Summary

Timing a space laser with a NASA-style stopwatch

To time how long it takes a pulse of laser light to travel from space to Earth and back, you need a really good stopwatch—one that can measure within a fraction of a billionth of a second.

The electric sands of Titan: The grains that cover Saturn's moon act like clingy packing peanuts

Experiments led by researchers at the Georgia Institute of Technology suggest the particles that cover the surface of Saturn's largest moon, Titan, are "electrically charged." When the wind blows hard enough (approximately 15 mph), Titan's non-silicate granules get kicked up and start to hop in a motion referred to as saltation. Show More Summary

Caterpillars Recruit Friends with Anal Scraping

Newly hatched caterpillars look helpless: they're teensy, soft and juicy, with no parent around for protection. But certain young insects, the masked birch caterpillars, are more capable than they seem. They gather in groups to keep themselves safe. Show More Summary

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