This evening – March 1, 2021 – look eastward before going to bed and you just might catch the bright waning gibbous moon and the star Spica over the horizon. Source: https://earthsky.org/tonight/moon-star-spica-on-mar-1-2021…
Tag: International Astronomical Union
The 1st sign of intelligent life beyond Earth?
Physicist Avi Loeb of Harvard believes we should take seriously the idea that ‘Oumuamua – the 1st known object to pass through our solar system from interstellar space – might have been created by an alien civilization. His new book is called “Extraterrestrial.” Source: https://earthsky.org/space/book-avi-loeb-extraterrestrial-1st-sign-of-intelligent-life…
What’s the difference between asteroids and comets?
Asteroids and comets are generally composed of different materials and reside in different locations of the solar system, while some rare objects display characteristics of both. Source: https://earthsky.org/astronomy-essentials/whats-the-difference-between-comets-and-asteroids…
What do redshifts tell astronomers?
A redshift reveals how an object is moving in space and enables astronomers to discover otherwise-invisible planets and the movements of galaxies, and to uncover the beginnings of our universe. Source: https://earthsky.org/astronomy-essentials/what-is-a-redshift…
When will the Age of Aquarius begin?
Astronomers and astrologers may agree that the Age of Aquarius starts when the vernal equinox point moves out of constellation Pisces and into Aquarius. But when will that be? There’s no definitive answer. Source: https://earthsky.org/human-world/when-will-the-age-of-aquarius-begin…
Last quarter moon and Spica mornings of January 6 and 7
Use the moon to guide your eye to Spica before daybreak on January 6 and 7, 2021, and look forward to this star’s all-night appearance in April. Source: https://earthsky.org/tonight/moon-spica-from-late-night-till-dawn…
220 years ago today: 1st asteroid discovered
Giuseppe Piazzi discovered the asteroid Ceres – now considered a dwarf planet – on January 1, 1801. Source: https://earthsky.org/space/jan-1-1801-discovery-of-ceres…
Earth faster, closer to Milky Way black hole, than previously thought
A new survey of our galaxy by astronomers with VERA in Japan has shown that Earth is both moving faster and is closer to the supermassive black hole at the center of our galaxy than previously thought. But don’t worry, our planet is safe! Source: https://earthsky.org/space/earth-faster-closer-to-milky-way-central-black-hole…
Astronomers measure a change in orbit for infamous asteroid Apophis
Astronomers in Hawaii have detected the Yarkovsky effect – a minuscule push imparted by sunlight – for asteroid Apophis. The effect is particularly important for Apophis, because it relates to the possibility of an Earth impact in 2068. Source: https://earthsky.org/space/asteroid-99942-apophis-encounters-2029-2036-2068…
Alpheratz belongs to Andromeda, but is part of the Great Square
Alpheratz, the brightest star in the constellation Andromeda, can help you locate the Andromeda Galaxy, the closest large spiral galaxy to our Milky Way home galaxy. Source: https://earthsky.org/brightest-stars/alpheratz-belongs-to-andromeda-but-pegasus-can-claim-it…