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First solar flare of 2015

An medium-size solar flare erupts from the right side of the sun in this image in the early morning of 13 January, 2015 (British time). The image was recorded using two wavelengths (171 and 304 angstroms) of light too energetic for our eyes to see, as captured by NASA's Solar Dynamics Observatory. Credit: NASA/Solar Dynamics Observatory
The sun emitted its first notable solar flare, peaking in the early morning of 13 January, 2015. Solar flares are powerful bursts of radiation – a sort of non-visible [...]

Engravings rewrite human history

A shell found on Java in the late 1800s was recently found to bear markings that seem to have been carved intentionally half a million years ago. The photograph is about 15 millimetres wide. Credit: Wim Lustenhouwer/VU University Amsterdam.
Scientists have found engravings on a 400,000 year-old fossilised shell from Java. It is the oldest known example of ancient humans deliberately creating pattern. Before [...]

Superstar Eta Carinae

Eta Carinae's great eruption in the 1840s created the billowing Homunculus Nebula, imaged here by Hubble. Now about a light-year long, the expanding cloud contains enough material to make at least 10 copies of our sun. Astronomers cannot yet explain what caused this eruption. Image Credit: NASA, ESA, and the Hubble SM4 ERO Team
Eta Carinae is the most luminous and massive stellar system within 10,000 light-years of Earth (the distance light travels in 10,000 years). It is known for its surprising [...]

A frog that gives birth

The L. larvaepartus frog (male, left, and female) from the island of Sulawesi in Indonesia. It is the only frog known that gives birth to tadpoles rather than laying spawn. Credit: Jim McGuire photos.
Most frogs lay eggs (frogspawn) in water that grow into tadpoles, froglets and then grown-up frogs. Now scientists have found a frog in the rainforests of Sulawesi Island, [...]

Morning Glory

A photograph of the Morning Glory Pool from 23 August, 2012, showing bright colours of red, orange, yellow and green. Credit: Joseph Shaw, Montana State University.
Researchers at Montana State University (USA) and Brandenburg University of Applied Sciences (Germany) have come up with an explanation for the beautiful colours of hot [...]
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