Scientists have been working with professional trainers in South Australia, Victoria and New South Wales to train dogs to sniff out Covid-19. Most of the dogs have a 100% success rate.
Image via Shutterstock/ The Conversation.
A new image of the planet-forming disk around the young star RU Lup reveals a beautiful and unexpected massive spiral of gas, reminiscent of a spiral galaxy.
ALMA image of the protoplanetary disk around the young star RU Lup. The inset shows a previous observation of the dust disk. ALMA revealed a massive spiral formation of gas around the main dust disk (in blue). Image via ALMA (ESO/ NAOJ/ NRAO)/ J. Huang/ S. Andrews/ AUI/ NSF/ S. Dagnello.
Unlike the open star clusters – containing sibling stars, scattered through the disk of our galaxy and presumably other galaxies – globular clusters are big, symmetrical and old, like an earthly city’s oldest and most staid citizens.
Globular Cluster M13 in Hercules. Credit: Adam Block/Sid Leach/Mount Lemmon SkyCenter/University of Arizona
The moon reaches its last quarter phase on August 11, 2020, at 04:44 UTC.
View at EarthSky Community Photos
| Dr Ski in Valencia, Philippines caught the last quarter moon shortly after it rose around midnight on the morning of September 22, 2019. This moon phase is perfect for helping you envision the location of the sun ... below your feet. Thanks, Dr Ski!
We can’t believe it. One of the most popular articles at EarthSky this week is the one asking, will Mars be as big as the moon on August 27? Short answer … no. This hoax has been circulating since 2003.
Hoax image via social media.
On the expected peak mornings of 2020’s Perseid meteor shower – August 11, 12 and 13 – a waning moon will be shining, too. Here’s how to minimize the moon and optimize the Perseids.
Taurid meteor, November 1, 2015, via Elliot Herman in Tucson, Arizona.
New research suggests that many of Mars’ ancient channels, thought to have been carved by flowing surface water, were formed instead by meltwater beneath glacial ice sheets.
In this image, channels on Devon Island in Nunavut in the Canadian Arctic (left) are superimposed with valleys in Mars' Maumee region (right). The shapes and overall networks are quite similar. Image via Cal-Tech CTX mosaic/ MAXAR/Esri/ UBC.
Satellite images have revealed 11 previously unknown emperor penguin colonies in Antarctica, identified by telltale reddish-brown guano stains the birds leave on the ice.
Emperor penguins (Aptenodytes forsteri) on sea ice at the Brunt ice shelf near BAS Halley Research Station. Image via British Antarctic Survey https://www.bas.ac.uk/media-post/scientists-discover-new-penguin-colonies-from-space/
The waning gibbous moon falls between full and last quarter. See it best from late night through early morning.
Desic Ilija Photography in Belgrade, Serbia caught the waning gibbous moon with seagulls on the morning of September 28, 2018.