Tuesday, September 27

Astronomy

Discovery of the oldest visible planetary Nebula hosted by a 500-million-year-old Galactic cluster — a rare beauty with a hot blue heart — ScienceDaily
Astronomy

Discovery of the oldest visible planetary Nebula hosted by a 500-million-year-old Galactic cluster — a rare beauty with a hot blue heart — ScienceDaily

An international team of astronomers led by members of the Laboratory for Space Research (LSR) and Department of Physics at The University of Hong Kong (HKU), have discovered a rare celestial jewel-a so-called Planetary Nebula (PN) inside a 500 million-year-old Galactic Open Cluster (OC) called M37 (also known as NGC2099). This is a very rare finding of high astrophysical value. Their findings have just been published in the open-access paper Astrophysical Journal Letters. PNe are the ejected, glowing shrouds of dying stars that shine with a rich emission line spectrum and display, as a result, their distinct colours and shapes that make them photogenic magnets for public interest. It was no coincidence that one of the first James Webb Space Telescope (the largest optical telescope in spac...
An extrasolar world covered in water?
Astronomy

An extrasolar world covered in water?

Artistic rendition of the exoplanet TOI-1452 b, a small planet that may be entirely covered in a deep ocean. Credit: Benoit Gougeon, Université de Montréal An international team of researchers led by Charles Cadieux, a Ph.D. student at the Université de Montréal and member of the Institute for Research on Exoplanets (iREx), has announced the discovery of TOI-1452 b, an exoplanet orbiting one of two small stars in a binary system located in the Draco constellation about 100 light-years from Earth. The exoplanet i...
Ancient Coin Discovery With An Astronomical Mystery
Astronomy

Ancient Coin Discovery With An Astronomical Mystery

What does the ancient coin found recently off the shores of Israel depict? You never know what discoveries are waiting to be found in old records or artwork. A recent archaeological find sent us down just such an astronomical rabbit-hole, leading us to ideas that are fun and interesting to consider. It all started with the recent amazing discovery of the ancient Roman coin off the coast of Haifa, Israel in the Mediterranean Sea. The bronze coin depicts the zodiac sign of Cancer, along with the Moon goddess Selene and crescent Moon. The ancient coin would have been part of a set of twelve, depicting the houses of the zodiac. The coin was recovered by the Israel Antiquities Authority’s Maritime Archaeology Unit. Remove All Ads on Universe Today Join our Patreon for as little as $3! ...
ARMAGH OBSERVATORY TO CELEBRATE LIFE OF WILLIAM HERSCHEL WITH LIVE CONCERT – Astronotes
Astronomy

ARMAGH OBSERVATORY TO CELEBRATE LIFE OF WILLIAM HERSCHEL WITH LIVE CONCERT – Astronotes

200th Anniversary Performance to Honour Astronomer and Composer Who Discovered Uranus on Friday 19th August starting at 6.30pm Armagh Observatory & Planetarium (AOP) is set to hold a live music event in its dome on 19th August 2022 to commemorate the 200th anniversary of the death of astronomer and musician, William Herschel. Renowned for discovering the planet Uranus, Herschel was also an accomplished composer. The event will see Sligo Baroque Orchestra perform a programme of music in the Observatory. This will include Herschel’s symphony No. 14, along with a movement from a string symphony and from his second oboe concerto. The concert will also see what is believed to be the first performance since the 18th century of Herschel’s Violin Concerto in G major – with Nicola Cleary as sol...
North America Nebula is a true likeness – Astronomy Now
Astronomy

North America Nebula is a true likeness – Astronomy Now

A widefield view of the North America Nebula and the Pelican Nebula. Image: Panagiotis Andreou. The North America Nebula (NGC 7000/Caldwell 20) in Cygnus is a fantastic emission nebula, an iconic object providing one of the highlights of the summer sky. These days amateurs like to give a name to deep-sky objects and many monikers leave one head-scratching, trying to match a figure or pattern to the name. The North America Nebula is different: it really does bear an uncanny resemblance to the North American continent! It’s also a great imaging target and can be seen through a pair of binoculars under a dark sky. The North America Nebula is located in Cygnus, a few degrees east of Deneb (alpha [a] Cygni). AN graphic by Greg Smye-Rumsby. How to observe The familiar form of Cygnus, the Swan, ...