Search query: challenge
Categories: All Categories
13142 records searched, 2027 records found, 20 matches displayed
< Previous 20 articles Next 20 articles >
Search Hints:
- Use a + (plus sign) or - (minus sign) to include or exclude a word: +mars -venus
- Use a ? (question mark) as a wildcard for a single letter: te?t (test,text)
- Use a * (asterisk) as a wildcard for multiple letters: he*t (heat, heart)
- Use a ~ (tilde) to expand word endings: meteor~ (meteorite, meteorid, meteorology)
Most frequent words for articles published in the last 45 days:
developed (95),
climate (85),
team (83),
species (75),
cells (74),
used (72),
human (64),
help (61),
change (60),
water (60),
years (60),
data (57),
energy (55),
such (53),
carbon (51),
discovered (50),
time (48),
like (47),
materials (46),
even (44)
Published Most volcanic activity on Mercury stopped about 3.5 billion years ago - Most Volcanic Activity on Mercury Stopped About 3.5 Billion Years Ago
(via sciencedaily.com) New research finds that major volcanic activity on the planet Mercury most likely ended about 3.5 bi...
Published New window into high-energy processes on the sun - New Window into High-Energy Processes on the Sun
(via sciencedaily.com) Understanding the sun from afar isn't easy. NASA's MESSENGER spacecraft -- which orbits Mercury, and...
Published Ancient volcanic explosions shed light on Mercury's origins - Ancient Volcanic Explosions Shed Light on Mercury's Origins
(via sciencedaily.com) The surface of Mercury crackled with volcanic explosions for extended periods of the planet's histor...
Published Where do astronauts go when they need 'to go?' - Where Do Astronauts Go When They Need 'To Go'?
(via sciencedaily.com) The first American man in space had no place "to go," and urinating in space was a tough problem for...
Published NASA's Kepler mission discovers tiny planet system: Smallest planet yet found around a star similar to our sun - NASA's Kepler Mission Discovers Tiny Planet System: Smallest Planet Yet Found Around a Star Similar to Our Sun
(via sciencedaily.com) Original source NASA's Kepler mission scientists have discovered a new planetary system that is home to the smallest...
Published How elliptical craters could shed light on age of Saturn's moons - How Elliptical Craters Could Shed Light on the Age of Saturn's Moons
(via sciencedaily.com) A new study describes how unique populations of craters on two of Saturn's moons could help indicate...
Published Scientists discover what extraordinary compounds may be hidden inside Uranus and Neptune - Scientists Discover Extraordinary Compounds Hidden Inside Uranus and Neptune
(via sciencedaily.com) Scientists have discovered that the depths of Uranus, Neptune and their satellites may contain extra...
Published Is salt the key to unlocking the interiors of Neptune and Uranus? - Is Salt the Key to Unlocking the Interiors of Neptune and Uranus?
(via sciencedaily.com) The interiors of several of our Solar System's planets and moons are icy, and ice has been found on...
Published Probing methane's secrets: From diamonds to Neptune - Probing Methane's Secrets: From Diamonds to Neptune
(via sciencedaily.com) Hydrocarbons from the Earth make up the oil and gas that heat our homes and fuel our cars. The study...
Published Earth and Venus grew up as rambunctious planets - Earth and Venus: The Rambunctious Planets
(via sciencedaily.com) Using machine learning and simulations of giant impacts, researchers found that the planets residing...
Published 'Pack ice' tectonics reveal Venus' geological secrets - Pack Ice Tectonics Reveal Venus' Geological Secrets
(via sciencedaily.com) A new analysis of Venus' surface shows evidence of tectonic motion in the form of crustal blocks tha...
Published Purported phosphine on Venus more likely to be ordinary sulfur dioxide - Purported Phosphine on Venus More Likely to be Ordinary Sulfur Dioxide
(via sciencedaily.com) Astronomers revisited and comprehensively reinterpreted the radio telescope observations underlying...
Published Venus' ancient layered, folded rocks point to volcanic origin - Venus' Ancient Layered, Folded Rocks Point to Volcanic Origin
(via sciencedaily.com) Researchers has found that some of the oldest terrain on Venus, known as tesserae, have layering tha...
Published Equatorial jet in Venusian atmosphere - Equatorial Jet in Venusian Atmosphere: A Closer Look
(via sciencedaily.com) Observations by Japan's Venus climate orbiter Akatsuki have revealed an equatorial jet in the lower...
Published Venus, if you will, as seen in radar with the Green Bank Telescope - Venus, if you will, as seen in radar with the Green Bank Telescope
(via sciencedaily.com) Recently, by combining the highly sensitive receiving capabilities of the National Science Foundatio...
Published Heavy metal frost? A new look at a Venusian mystery - Heavy Metal Frost? A New Look at a Venusian Mystery
(via sciencedaily.com) Venus is hiding something beneath its brilliant shroud of clouds: a first order mystery about the pl...
Published Unraveling mysteries of the Venusian atmosphere - Unraveling Mysteries of the Venusian Atmosphere
(via sciencedaily.com) Underscoring the vast differences between Earth and its neighbor Venus, new research shows a glimpse...
Published Venus vortices go for chaotic multi-storey strolls around the poles - Venus Vortices: Chaotic Multi-Storey Strolls Around the Poles
(via sciencedaily.com) A detailed study of Venus' South Polar Vortex shows a much more chaotic and unpredictable cyclone th...
Published Venus transit and lunar mirror could help astronomers find worlds around other stars - Venus Transit and Lunar Mirror: A New Way to Discover Exoplanets
(via sciencedaily.com) On June 6, 2012, Venus passed directly between Earth and the sun, in a so-called transit where the p...
Published New sunspots producing space weather - New Sunspots Producing Space Weather
(via sciencedaily.com) On Jan. 13, 2013, at 2:24 a.m. EST, the sun erupted with an Earth-directed coronal mass ejection or...