You’ve probably heard about astronomy in the news lately. A new discovery in the physics of gamma-ray bursts may have revealed some lost works of the Greek astronomer Hipparchus. Then, there’s the news about the new spacecraft named Lucy, which will fly by Earth on October 16th.
Astronomy in the news is an excellent way to stay up to date with what’s happening in the universe. While there are regular phenomena that you can count on, you can also count on new discoveries every week. Generally, these new discoveries are timed to coincide with meeting of the American Astronomical Society or the results of planetary exploration.
A new study shows that the oldest star in our galaxy was formed just after the Big Bang, 13.7 billion years ago. The discovery of this star gives scientists an insight into the chemistry of the first stars and gives them a better picture of the Universe’s early days. The first stars formed out of a primordial soup of hydrogen and helium. They were massive and luminous, but short-lived, and eventually exploded into supernovae.
Another astronomy discovery in the news this week is the Einstein Ring, a rare image of a galaxy lensed by gravity. The effect was predicted by Albert Einstein, who said that gravity would bend spacetime and distorted light. It was first observed during a total solar eclipse in 1919. The Einstein Ring is formed when massive objects such as black holes and galactic clusters bend light from distant galaxies. The intervening objects act as lenses and cause arcs of light that can be observed as Einstein rings.