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Characterisation Of The Hydrospheres Of TRAPPIST-1 Planets
Context. Planetary mass and radius data are showing a wide variety in densities of low-mass exoplanets. This includes sub-Neptunes, whose low densities can be explained with the presence of a volatile-rich layer. Water is one of the most abundant volatiles,...
Around Which Stars Can TESS Detect Earth-like Planets? The Revised TESS Habitable Zone Catalog
In the search for life in the cosmos, NASA's Transiting Exoplanet Survey Satellite (TESS) mission has already monitored about 74% of the sky for transiting extrasolar planets, including potentially habitable worlds....
Hubble Sheds New Light on Formation of Planetary Nebulae
New images of the Butterfly Nebula and the Jewel Bug Nebula taken by the NASA/ESA Hubble Space Telescope are revealing information about how planetary nebulae develop their dramatic features. The Butterfly Nebula is one of the brightest and more extreme examples of a pinched-waist, bipolar planetary nebula. Also known as NGC 6302, it is located [...]
Genesis of blue lightning into the stratosphere detected from the International Space Station
Dark clouds, the smell of rain on a hot sidewalk, the flashes of intense light followed by a loud crackling and then a low, rolling thunder – who doesn’t love a good summer thunderstorm? We’ve all seen one, heard one, or been completely soaked by one. But how much do we really know about this weather phenomenon?
Two New Giant Radio Galaxies Discovered
Astronomers using the MeerKAT radio telescope at the South African Radio Astronomy Observatory in Cape Town, South Africa, have discovered two new radio galaxies with sizes of more than 6.5 million light-years, or 62 times larger than the Milky Way. Some classes of active galactic nuclei have jets of relativistic plasma and particles emanating from [...]
Tests prove carbon-fibre fuel tank for Phoebus upper stage
Recent tests show that lightweight carbon-fibre reinforced plastic is strong enough to replace metal used in upper-stage rocket structures. This is an important milestone in Europe for the development of a prototype of a highly-optimised ‘black’ upper stage, Phoebus, a joint initiative by MT Aerospace and ArianeGroup, funded by ESA.
Seeing in a flash
Image: Seeing in a flash
Mystery Of Martian Glaciers Revealed
In a new paper published today in the Proceedings of the National Academies of ScienceS (PNAS), planetary geologist Joe Levy, assistant professor of geology at Colgate University, reveals a groundbreaking new analysis of the mysterious glaciers of Mars....
Researchers Rewind the Clock to Calculate Age and Site of Supernova Blast
Astronomers are winding back the clock on the expanding remains of a nearby, exploded star. By using NASA's Hubble Space Telescope, they retraced the speedy shrapnel from the blast to calculate a more accurate estimate of the location and time...
Dissecting The Anatomy Of Planetary Nebulae
Images of two iconic planetary nebulae taken by the Hubble Space Telescope are revealing new information about how they develop their dramatic features...