Here’s how to spot Canopus, the 2nd-brightest star in the sky as seen from Earth, on February evenings. Source: https://earthsky.org/brightest-stars/few-know-the-second-brightest-star-canopus…
Tag: fred
Maarten Schmidt solves the puzzle of quasars
On February 5, 1963, Maarten Schmidt unraveled the mystery of quasars and pushed back the edges of the known cosmos. His insight into quasars – the most distant and luminous objects known – has changed the way scientists view the universe. Source: https://earthsky.org/space/this-date-in-science-maartin-schmidt-discovers-first-known-quasar…
What is the Sickle in Leo?
The Sickle in Leo is an easy-to-spot backward question mark shape made of stars that marks the head and shoulders of the constellation of the lion. The moon sometimes passes in front of the Sickle’s brightest star, Regulus. Source: https://earthsky.org/favorite-star-patterns/the-sickle-backward-question-mark-pattern-in-leo…
Theia 456 is a stretched-out stream of sibling stars
A close look at the “stellar stream” known as Theia 456 finds it contains contains 468 stars born at the same time. Source: https://earthsky.org/space/theia-456-stellar-stream-468-stars-born-together…
What are degrees, arc minutes and arc seconds?
How do skywatchers measure distances in the night sky? Here’s how to understand it when they speak of objects as being several degrees (or several arc minutes or arc seconds) apart. Source: https://earthsky.org/astronomy-essentials/sky-measurements-degrees-arc-minutes-arc-seconds…
Top 4 keys to understanding moon phases
How can you understand what causes the various phases of the moon? Four tips, here. [video src="https://upload.wikimedia.org/wikipedia/commons/7/7f/Orbit_of_the_Moon_in_2013.ogv" poster="https://upload.wikimedia.org/wikipedia/commons/7/7f/Orbit_of_the_Moon_in_2013.ogv"]Source: https://earthsky.org/moon-phases/understandingmoonphases…
Moon passes in front of Taurus the Bull
These next three nights – December 26, 27 and 28, 2020 – the bright waxing gibbous moon shines in front of the constellation Taurus the Bull. Source: https://earthsky.org/tonight/moon-passes-in-front-of-taurus-the-bull…
FDA Panel Endorses Moderna’s Coronavirus Vaccine
Vaccine advisers to the US Food and Drug Administration voted easily and quickly to recommend that the agency give emergency use authorization to Moderna’s coronavirus vaccine. CNN reports: The Vaccines and Related Biological Products Advisory Committee (VRBPAC) voted 20-0 with one abstention to recommend EUA for the Moderna vaccine, which is very similar in design, composition, safety and efficacy to Pfizer/BioNTech’s…
The moon’s shadow on Earth yesterday
During a total solar eclipse, the moon’s shadow sweeps across Earth. Those in the shadow’s path see the total eclipse. Those outside the path of the shadow may see varying stages of a partial eclipse. Source: https://earthsky.org/todays-image/photo-moon-shadow-total-eclipse-dec14-2020-goes-east…
South American total solar eclipse December 14
The new moon moves smack-dab in front of the sun on December 14, 2020, to present this year’s one and only total eclipse of the sun. Source: https://earthsky.org/astronomy-essentials/south-american-total-solar-eclipse-december-14…