Category Astronomy/Space

The Strange Orbits of ‘Tatooine’ Planetary Disks

Credit: ALMA (ESO/NAOJ/NRAO), I. Czekala and G. Kennedy; NRAO/AUI/NSF, S. Dagnello

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have found striking orbital geometries in protoplanetary disks around binary stars. While disks orbiting the most compact binary star systems share very nearly the same plane, disks encircling wide binaries have orbital planes that are severely tilted. These systems can teach us about planet formation in complex environments.

In the last two decades, thousands of planets have been found orbiting stars other than our Sun. Some of these planets orbit two stars, just like Luke Skywalker’s home Tatooine...

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Comet ATLAS may put on quite a Show

Comet’s trajectory in the sky with 7-day markers. Credit: Tomruen/CC BY-SA 4.0/Wikimedia Commons

A comet called Atlas is currently heading toward the sun, and it just might put on a really good show in a couple of months. Discovered last December by the Asteroid Terrestrial-impact Last Alert system in Hawaii (thus the name ATLAS for the comet), the comet has been growing much brighter than experts had predicted. If it manages to hold its shape as it moves nearer to the sun, it could grow brighter than Venus.

Shortly after its discovery, ATLAS began growing brighter than expected—a lot brighter. So bright that it can now be seen by amateur astronomers with binoculars. It is expected to reach its peak brightness at the end of May...

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On the Origin of Massive Stars

This scene of stellar creation, captured by the NASA/ESA Hubble Space Telescope, sits near the outskirts of the famous Tarantula Nebula. This cloud of gas and dust, as well as the many young and massive stars surrounding it, is the perfect laboratory to study the origin of massive stars.

A scene of stellar creation, captured by the NASA/ESA Hubble Space Telescope, sits near the outskirts of the famous Tarantula Nebula. This cloud of gas and dust, as well as the many young and massive stars surrounding it, is the perfect laboratory to study the origin of massive stars.

The bright pink cloud and the young stars surrounding it in this image taken with the NASA/ESA Hubble Space Telescope have the uninspiring name LHA 120-N 150...

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New Telescope design could Capture Distant Celestial objects with Unprecedented Detail

A new multi-field hypertelescope design could image multiple stars at once with high resolution. Hypertelescopes use large arrays of mirrors with space between them. The multi-field design could be incorporated into the hypertelescope prototype being tested in the Alps (pictured).
Credit: Antoine Labeyrie, Collège de France and Observatoire de la Cote d’Azur

Researchers have designed a new camera that could allow hypertelescopes to image multiple stars at once. The enhanced telescope design holds the potential to obtain extremely high-resolution images of objects outside our solar system, such as planets, pulsars, globular clusters and distant galaxies.

“A multi-field hypertelescope could, in principle, capture a highly detailed image of a star, possibly also showing its planets and e...

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