The NASA/ESA’s Hubble Space Telescope has tracked the fading light of a supernova in the spiral galaxy NGC 2525, located 70 million light years away. Supernovae like this one can be used as cosmic tape measures, allowing astronomers to calculate the distance to their galaxies. Hubble captured these images as Read more…
Have you ever been worried about the impact of an asteroid wiping out human life? Well, I have some disturbing news for you: there is another possibility involving the explosion of a massive star that gives rise to a gamma-ray burst (called by astronomers simply a GRB), when the star ends its life producing a black hole.
The Observatory and Planetarium has welcomed school students to visit for work experience. A previous Astronote described our work with the Faulkes Telescope Project. Below is an account written by three of our work experience students in 2018 March, based on the work done at Armagh Observatory and Planetarium by them and three other students.
Once again, astronomers around the world are investigating a stellar explosion, a supernova, in M82, a galaxy 12 million light years away in the constellation Ursa Major. Although supernovae are awesomely destructive, this event is far, far too distant to cause any danger at all to our planet. Discovered Read more…
Looking up in to the night sky it’s not difficult to see why the ancient Greeks believed that all the stars in the night sky were fixed on a celestial sphere revolving around the Earth and other planets. From our view on Earth the stars appear to be at a Read more…
What was the Star of Bethlehem? Recorded only in the Gospel of Matthew, this mysterious celestial object is said to have heralded the Nativity. For millennia stargazers have wondered what it may have been. Now when Jesus was born in Bethlehem of Judea in the days of Herod Read more…
A clear night sky is a thing of beauty and wonder. Thousands of scattered stars twinkle in the darkness. What are the stars? How do they live and die? Could an exploding star cause disaster on Earth? Over the past century or so astronomers have by observation and calculation established Read more…
The giant star Betelgeuse will soon perish in a titanic explosion. Could this happen in the mythical “doomsday” year of 2012? Could dying Betelgeuse take us with it? “Beetlejuice! Beetlejuice! Beetlejuice!” was the chant which summoned the obnoxious ghost played by Michael Keaton in Tim Burton’s 1988 movie. Keaton’s character Read more…