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Why I'm choosing dark matter over dark energy - for now at least

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Why I'm choosing dark matter over dark energy - for now at least

Dark matter is my focus these days, but the intractable problems of dark energy and cosmic acceleration are still on my mind, says Chanda Prescod-Weinstein

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The FRAMe Project functional model in comparison to the Fragment A visual and the AMRP X-Ray images. The central large gear-b1 with the four arms is visible. The Fragments of the Mechanism are exhibited in National Archaeological Museum of Athens, Greece.

Space

Ancient computer may have had its clock set to 23 December 178 BC

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HD1, object in red, appears at the center of a zoom-in image.

Space

Astronomers have found what may be the most distant galaxy ever seen

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image of message to extra terrestrials

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��è��Ƶs want to play chess with aliens as soon as we can find them

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The most distant star ever discovered seen by Hubble Space Telescope

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The most distant star ever discovered seen by Hubble Space Telescope

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early universe

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Furthest star ever seen offers glimpse 12.8 billion years into past

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ORC1 image from MeerKAT_Credit J. English, EMU, MeerKAT, DES

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What are odd radio circles?

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ORC1 image from MeerKAT_Credit J. English, EMU, MeerKAT, DES

Space

Odd radio circles in space may come from black holes at their centres

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While the purpose of this image was to focus on the bright star at the center for alignment evaluation, Webb's optics and NIRCam are so sensitive that the galaxies and stars seen in the background show up. At this stage of Webb?s mirror alignment, known as ?fine phasing,? each of the primary mirror segments have been adjusted to produce one unified image of the same star using only the NIRCam instrument. This image of the star, which is called 2MASS J17554042+6551277, uses a red filter to optimize visual contrast.

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The James Webb Space Telescope has sent back its clearest image yet

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Artist Jorge Ma?es Rubio, part of ESA?s future-oriented Advanced Concepts Team (ACT), has designed a place of contemplation to serve a future lunar settlement. It would be built on the sunlit rim of 21-km diameter Shackleton Crater, which is bathed much of the time in sunlight while overlooking a 4.2 km-deep interior mired in perpetual shadow.

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Double-shadowed moon craters may be coldest place in the solar system

The moon has deep craters that sit at such an angle that even reflected sunlight doesn’t touch some areas, making them prime locations for water ice to collect

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The sky-measuring trick that every stargazer should know

Regulars

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Astronomers have found two unexpectedly hot stars covered in ash

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Space

James Webb Space Telescope just sent back its first image - of itself

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Space

Huge nuclear explosion in space is so rare we may never see one again

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