Messier 71 – the NGC 6838 Globular Cluster

Welcome back to Messier Monday! Today, we continue in our tribute to our dear friend, Tammy Plotner, by looking at the unusual globular cluster known as Messier 71.

If you look up into the night sky, on a particularly clear night when there’s not a lot of bright lights nearby, you may be able to make out a series of faint objects. Similar to the Milky Way, that cloudy, ghostly band that reaches across the night sky, these small pockets of fuzzy light are in fact collections of stars located thousands of light years away.

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Astronomy Cast Ep. 505: Seismology

We’re always interested in the surface features of the planets and moons in the Solar System, but that’s only skin deep. It turns out, these worlds have an interesting inner life too. Thanks to the science of seismology, we can peer into our planet and learn how it works… inside. And we’re about to take that technology to Mars.

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SpaceX is going to build a mini-BFR to launch on a Falcon 9

In September of 2016, Elon Musk unveiled his vision for a super-heavy launch vehicle, which would be SpaceX’s most ambitious project to date. Known as the Big Falcon Rocket (BFR), this massive launch vehicle is central to Musk’s plan of conducting space tourism with flights into orbit and to the Moon. It is also intrinsic to his vision of sending astronauts and colonists to Mars.

Ever since, the astronomical and aerospace community has been paying close attention to any updates provided by Musk on the BFR’s development. In his latest update, which was made via Twitter, Musk indicated that his company will be building a small, winged version of the massive spaceship component – the Big Falcon Spaceship (BFS) – which will be launch-tested using a Falcon 9 or Falcon Heavy rocket.

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Ancient Star Found that’s Only Slightly Younger than the Universe Itself

According to the most widely-accepted cosmological theory, the first stars in our Universe formed roughly 150 to 1 billion years after the Big Bang. Over time, these stars began to come together to form globular clusters, which slowly coalesced to form the first galaxies – including our very own Milky Way. For some time, astronomers have held that this process began for our galaxy some 13.51 billion years ago.

In accordance with this theory, astronomers believed that the oldest stars in the Universe were short-lived massive ones that have since died. However, a team of astronomers from Johns Hopking University recently discovered a low-mass star in the Milky Way’s “thin disk” that is roughly 13.5 billion-year-old. This discovery indicates that some of the earliest stars in the Universe could be alive, and available for study.

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Mars InSight Lands on November 26th. Here’s where it’s going to touch down

In the course of exploring Mars, the many landers, rovers and orbiters that have been sent there have captured some truly stunning images of the landscape. Between Spirit, Opportunity, Curiosity, the Mars Reconnaissance Orbiter (MRO) and others, we have treated to some high-definition images over the years of sandy dunes, craters and mountains – many of which call to mind places here on Earth.

However, if one were to describe the region where NASA’s Interior Exploration using Seismic Investigations, Geodesy and Heat Transport (InSight) lander will be landing (on Nov. 26th, 2018), the word “plain” would probably come to mind (and it would be appropriate). This region is known as Elysium Planitia, and it is where InSight will spend the next few years studying Mars’ interior structure and tectonic activity for the sake of learning more about its history.

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Weekly Space Hangout: Nov 7, 2018 – Colin Stuart ‘s “How to Live in Space”

Hosts:
Fraser Cain (universetoday.com / @fcain)
Dr. Paul M. Sutter (pmsutter.com / @PaulMattSutter)
Dr. Kimberly Cartier (KimberlyCartier.org / @AstroKimCartier )
Dr. Morgan Rehnberg (MorganRehnberg.com / @MorganRehnberg & ChartYourWorld.org)

“Tonight Fraser interviews Colin Stuart, author of How to Live in Space, which is available now. Visit https://www.penguinrandomhouse.com/books/580109/how-to-live-in-space-by-colin-stuart/9781588346384/ for information about buying your own copy.

Colin is a science speaker and author, as well as a Fellow of the Royal Astronomical Society. He has written articles for the London Mathematical Society and the Institute for Mathematics and its Applications, and has spoken to more than 250k people about the wonders of the universe in which we live.

You can learn more about Colin by visiting his website at http://www.colinstuart.net/”

Announcements:

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If you’d like to join Dr. Paul Sutter and Dr. Pamela Gay on their Cosmic Stories in the SouthWest Tour in August 2019, you can find the information at astrotours.co/southwest.

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