Tag: Cosmic

One of the hardest concepts to wrap our head around is that of the hot Big Bang: the notion that our Universe began 13.8 billion years ago from an extraordinarily hot, dense, uniform, and rapidly expanding state. Initially, all known species of particles and antiparticles confirmed to exist, along w...

It may even be possible, although there are some compelling physics reasons to think not, that the Universe was born with primordial black holes: a population of black holes that sprang into existence long before the very first stars ever formed. These scenarios are particularly important when it co...

Cosmic inflation is the state that preceded and set up the hot Big Bang. Here’s what the Universe was like during that time period. Our Universe today is full of matter and radiation, and can be observed by us through a variety of means. Atoms have clumped and clustered together due to bill...

What about the speed of light? Our nearest star is Proxima Centauri, just over four light-years away. Now, with a wormhole, if we can connect a point in space just outside the Earth’s atmosphere to a point near Proxima Centauri, you can basically fly a spaceship and instantly appear in th...

Looking out at our Universe today, we not only see a huge variety of stars and galaxies both nearby and far away, we also see a curious relationship: the farther away a distant galaxy is, the faster it appears to move away from us. This continues as far as we’ve ever looked, and remains true o...

For 550 million years, neutral atoms blocked the light made in stars from traveling freely through the Universe. Here’s how it then changed. Forming stars sounds like the easiest thing in the Universe to do, given enough time. However, making stars that are actually visible to an observer i...

Astrophotography, Supernova Detection & Social Media Branding Few people can turn their hobby into a tool for public benefit. Mark has done just that by broadcasting his love for Astronomy through public education events. My conversation with Mark covers how he does impactful science commu...

Astrophotography, Supernova Detection & Social Media Branding Few people can turn their hobby into a tool for public benefit. Mark has done just that by broadcasting his love for Astronomy through public education events. My conversation with Mark covers how he does impactful science commu...

I am sorry to be the bearer of bad cosmic news. But our supplies are limited in the long-term future of the Universe. If we stay within our host Milky-Way galaxy, the supplies would at most double after the merger with our sister galaxy, Andromeda, in a few billion years. But beyond t...