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Categories: Space: Cosmology, Space: Exploration

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New high-resolution observations clearly show a moon-forming region around exoplanet PDS 70c. The observations have allowed astronomers to determine the ring-shaped region's size and mass for the first time.

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Using sophisticated simulations of the whole of the Local Group of galaxies, including the Milky Way, the Andromeda galaxy and their respective satellite galaxies, researchers have shown that the satellites not only can retain their gas but can also experience many new episodes of star formation just after passing close to the pericenter of their parent galaxy.

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Scientists have developed an innovative way to use NASA satellite data to track the movement of tiny pieces of plastic in the ocean.

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New research has revealed how radar satellites can improve the ability to detect, monitor, prepare for and withstand natural disasters in Australia including bushfires, floods and earthquakes.

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Scientists reported new research results today suggesting that artificial objects in orbit around the Earth are brightening night skies on our planet significantly more than previously understood.

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Analysis of observations made by satellites in 2014 has revealed a long-lasting 'space hurricane' -- a swirling mass of plasma several hundred kilometers above the North Pole, raining electrons instead of water.

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Observations confirmed that dark coating can reduce satellite reflectivity by half. There are concerns that numerous artificial satellites in orbit could impair astronomical observations, but these findings may help alleviate such conditions.

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Liquids aren't as well behaved in space as they are on Earth. Inside a spacecraft, microgravity allows liquids to freely slosh and float about. This behavior has made fuel quantity in satellites difficult to pin down, but a new 3D-imaging fuel gauge could offer an ideal solution.

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Quick flashes of light reflecting from satellites and debris in Earth's orbit are extremely common, according to new findings that may improve the accuracy of astronomical data. For the first time, astronomers report the flashes, which are often mistaken for stars, occur more than 1,000 times an hour across the sky.

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A two-volume atlas presents and explains the impact sites of meteorites and asteroids worldwide.

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When satellites take pictures of Earth at night, how much of the light that they see comes from streetlights? A team of scientists have answered this question for the first time using the example of the U.S. city of Tucson, thanks to 'smart city' lighting technology that allows dimming. The result: only around 20 percent of the light in the Tucson satellite images comes from streetlights.

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Using radio telescopes observing distant stars, scientists have connected optical atomic clocks on different continents.

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Astronomers are warning that orbital debris posing a threat to operational satellites is not being monitored closely enough, as they publish a new survey finding that over 75% of the orbital debris they detected could not be matched to known objects in public satellite catalogues.

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Researchers found that satellite imagery can identify non-native and invasive Amur honeysuckle, an ornamental shrub introduced from Asia that has spread in forests across much of the United States.

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Image data reanalysis has revealed that ancient tectonic troughs are concentrically distributed across almost the entire surface of Jupiter's moon Ganymede. Computer simulation results suggest that this giant crater could have resulted from the impact of an asteroid with a 150-kilometer radius. If so, this the largest impact structure identified in the solar system so far.

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For a long time, researchers have believed that there is not much of interest going on in the Sun during the passive period, therefore not worth studying. Now this assumption is showed to be false. This is the first time that astronomers are systematically studying the phenomena of the solar minimum.

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Satellites are almost always illuminated by the sun, apart from short transitions to Earth's shadow. The light that a satellite reflects can help reveal the solution to a structural malfunction.

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Measuring the speed of coronal mass ejections (CMEs) as they erupt from the sun, in addition to their size, found to be crucial in providing accurate early warnings that keep astronauts and technology safe.

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Aging satellites and space debris crowd low-Earth orbit, and launching new satellites adds to the collision risk. The most effective way to solve the space junk problem, according to a new study, is not to capture debris or deorbit old satellites: it's an international agreement to charge operators 'orbital-use fees' for every satellite put into orbit.

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Just like we orbit the sun and the moon orbits us, the Milky Way has satellite galaxies with their own satellites. Drawing from data on those galactic neighbors, a new model suggests the Milky Way should have an additional 100 or so very faint satellite galaxies awaiting discovery.