Let the moon show you Antares, a red supergiant star and the brightest star in the constellation Scorpius the Scorpion on the morning of March 5. Source: https://earthsky.org/tonight/moon-antares-morning-of-mar-5-2021…
Tag: Stellar
Hoinga: Debris of stellar explosion found in unexpected location
In the first all-sky survey by the eROSITA X-ray telescope onboard SRG, astronomers at the Max Planck Institute for Extraterrestrial Physics have identified a previously unknown supernova remnant, dubbed “Hoinga.” The finding was confirmed in archival radio data and marks the first discovery of a joint Australian-eROSITA partnership established to explore our Galaxy using multiple wavelengths, from low-frequency radio waves to…
MUSE sheds more light on central kinematics of Messier 15
Using the Multi Unit Spectroscopic Explorer (MUSE), astronomers have performed observations of an old globular cluster known as Messier 15. The observational campaign delivered essential information about stellar kinematics of the central region of this cluster. The results were published February 24 on arXiv.org. Source: https://phys.org/news/2021-03-muse-central-kinematics-messier.html…
Google Finance Adds Crypto Data Tab For Bitcoin, Ether, Litecoin and Bitcoin Cash
Google Finance now has a dedicated “crypto” field for bitcoin, ether, litecoin and bitcoin cash. CoinDesk reports: Right at the top of the page, where users can “compare markets,” crypto is listed among the five default markets, which also includes U.S., Europe, Asia and “Currencies.” At the moment, it appears Google Finance only tracks a limited number of cryptocurrencies. Bitcoin, ethereum,…
What is a quasar?
A quasar is an extremely bright and distant point-like source visible to radio telescopes. The source is a so-called Active Galactic Nucleus, fueled by a supermassive black hole. Source: https://earthsky.org/astronomy-essentials/definition-what-is-a-quasar…
Why does this galaxy look older than its years?
To the extent that we can see them, galaxies in the very early universe should look relatively young and unformed. But galaxy ALESS 073.1 is a surprise to astronomers: it looks more mature than we’d have any reason to expect. Why? Source: https://earthsky.org/space/galaxy-looks-older-than-its-years-aless-073-1…
Magnetic fields drive astrophysical jet shapes
Outflows of matter are general features stemming from systems powered by compact objects such as black holes, active galactic nuclei, pulsar wind nebulae, accreting objects such as Young Stellar Objects (YSO) and mature stars such as our sun. Source: https://phys.org/news/2021-02-magnetic-fields-astrophysical-jet.html…
Nearby black hole Cyg X-1 more massive than thought
New research suggests that the famous black hole Cygnus X-1 – first black hole ever detected and one of the closest to Earth – is farther away and much more massive than previously believed. Source: https://earthsky.org/space/cygnus-x-1-black-hole-more-massive-farther…
Start-up founder Mary-Brenda shares how learning can empower you to discover a world without limits
Meet Mary-Brenda! She is an entrepreneur and founder of a social impact start-up focused on expanding access to affordable, clean energy throughout Nigeria. She is also a lifelong learner with ambitious academic goals and a thirst for new skills and knowledge that she can apply to make a positive impact in the world. She ultimately […]
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Delayed radio flares from a tidal disruption event
A team of researchers from the Hebrew University of Jerusalem (HUJI) led by Dr. Assaf Horesh have discovered the first evidence of radio flares emitted only long after a star is destroyed by a black hole. Published in the periodical Nature Astronomy, the discovery relied upon ultra-powerful radio telescopes to study these catastrophic cosmic events in distant galaxies called Tidal Disruption…