Posted inEnviro

UK suffers marine heatwave

Some of the most severe marine heat increases on Earth are occurring in the seas surrounding the UK and Ireland. Satellite measurements show that water temperatures in certain areas are above average for this time of year. The coastal regions off the east coast of the UK, from Durham to Aberdeen, and off the northwest […]

Posted inEnviro

Revealing invisible Himalaya glacier loss

New research reveals that ice being lost from glaciers that flow into lakes in the Himalayas has been significantly underestimated. This discovery has critical implications for predicting the demise of the region’s glaciers and for managing critical water resources. Glaciers in the Himalayas are part of the ‘third pole’, so-called because ice fields in high-mountain […]

Posted inSci/Tech

Webb measures the temperature of a rocky exoplanet

An international team of researchers has used the NASA/ESA/CSA James Webb Space Telescope to measure the temperature of the rocky exoplanet TRAPPIST-1 b. The measurement is based on the planet’s thermal emission: heat energy given off in the form of infrared light detected by Webb’s Mid-Infrared Instrument (MIRI). The result indicates that the planet’s dayside has a […]

Posted inEnviro

Seasonal changes in Antarctic ice sheet flow dynamics detected for the first time

Certain estimates of Antarctica’s total contribution to sea-level rise may be over, or even underestimated, after researchers detected a previously unknown source of ice loss variability. In a new paper published in The Cryosphere, researchers using Copernicus Sentinel-1 data, found that glaciers feeding the George VI Ice Shelf speed up by approximately 15% during the Antarctic summer. This is the […]

Posted inSci/Tech

First kinetic impact test succeeds in shifting asteroid orbit

The kinetic impact of NASA’s DART spacecraft with the Dimorphos asteroid around its larger Didymos parent body has succeeded in shifting its orbit, meaning humankind’s first planetary defence test has been successful. Observations are continuing of the debris plume caused by the collision for as long as possible, as the asteroid system gradually recedes from Earth. As […]

Posted inSci/Tech

Webb and Hubble capture detailed views of DART impact

Two of the great space observatories, the NASA/ESA/CSA James Webb Space Telescope and the NASA/ESA Hubble Space Telescope, have captured views of a unique experiment to smash a spacecraft into a small asteroid. Observations of NASA’s Double Asteroid Redirection Test (DART) impact mark the first time that Webb and Hubble were used to simultaneously observe the same celestial […]

Posted inSci/Tech

Hera team congratulates NASA asteroid impactors

ESA’s Hera mission team congratulates their counterparts in NASA’s DART mission team for their historic impact with the Dimorphos asteroid. Moving at 6.1 km per second, the car-sized Double Asteroid Redirect Test spacecraft struck the 160-m diameter asteroid at 01:15 CEST (00:15 BST) in the early hours of Tuesday morning, in humankind’s first test of the ‘kinetic […]

Posted inEnviro

Rhine river runs dry

Water levels on the Rhine River, Europe’s second-largest river, have continued to drop owing to soaring temperatures and lack of rainfall, preventing many vessels from navigating through the waters at full capacity. The Copernicus Sentinel-2 mission captured part of the Rhine River near Cologne – showing the stark difference between August 2021 and August 2022. Flowing from […]

Posted inSci/Tech

Webb in full focus

Alignment of the James Webb Space Telescope is now complete. After full review, the observatory has been confirmed to be capable of capturing crisp, well-focused images with each of its four powerful onboard science instruments. Upon completing the seventh and final stage of telescope alignment, the team held a set of key decision meetings and unanimously agreed […]

Posted inSci/Tech

Hubble observations used to answer key exoplanet questions

Archival observations of 25 hot Jupiters by the NASA/ESA Hubble Space Telescope have been analysed by an international team of astronomers, enabling them to answer five open questions important to our understanding of exoplanet atmospheres. Amongst other findings, the team found that the presence of metal oxides and hydrides in the hottest exoplanet atmospheres was […]

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