Big Questions Archives -
Yesterday, Dr. Tabetha Boyajian and Professor Jason Wright have participated in a Reddit AMA (ask me anything) to answer any and all questions regarding the “most controversial star in our Galaxy” KIC 8462852.
There are about 100 billion to 200 billion galaxies in the observable universe. For roughly 13 billion years they’ve swarmed around each other, colliding and merging, undergoing rapid star formation and suffering periods of drought, where no new stars are born.
Our universe have some peculiar properties, properties that couldn’t be explained by conventional Big Bang theory. For example, it’s flat, meaning it’s at just the right mass density that it will neither expand forever nor collapse back on itself. Why should it be flat?
The WOW signal is considered one of the most intriguing events in the search for life in outer space. In 1977 a SETII researcher, astronomer Jerry Ehman, working at the Ohio State University’s Big Ear radio telescope heard an extremely strong signal coming from the constellation Sagittarius.
The first stars in the Universe, so–called Population III or Pop III stars, are believed to have formed from the primordial ‘molecular’ clouds, a metal–free gas available in the very early Universe, in pristine conditions.
In 2004, researchers were combing through the data from a satellite called WMAP when they noticed something unusual. Part of the universe looked a lot colder than the rest. They called it, appropriately, the Cold Spot and scientists still aren’t really sure why it’s there.
One of the most mysterious celestial objects in the night sky, known as 1991 VG, set to pass Earth in summer 2017.
New study suggests that an encounter of the solar system with a giant molecular dark cloud could have driven an environmental catastrophe leading to mass extinction in the last 8 million years of the Cretaceous period.
Falling in love is just like falling in a black hole, time goes slow for you but is the same for everyone else. But what are black holes? And how did they get here?