InSight data were used to determine that Mars has a ~600 km solid inner core. A bit of a surprise and also a bit of a quandary given earlier studies found a molten silicate layer at the base of the mantle. We need a martian seismic network! Read my News and Views here: rdcu.be/eDVOJ

I like to think that the lander tripped over the crater as it was landing and then unceremoniously face planted. The equivalent of the banana slip on the Moon?

Oh, and a Trump rally on the National Mall!

Here is an example of one of the many Chinese citizens who (called) the city home.

PSA: The OMB has been directing NASA to shut down services at Goddard Space Flight Center, including all cafeterias, vending, the health center, etc. Now they are ending internships for early careers only at GSFC. Is this how we want to invest in the future of our nation's space exploration program?

University of Maryland Geophysicist Helps Identify Moonquake Dangers that Could Threaten Future Missions | College of Computer, Mathematical, and Natural Sciences | University of Maryland A new study shows that seismic activity on the moon could pose risk to long-term lunar infrastructure.

Check out my latest paper with Tom Watters at the Smithsonian! We used the exposure ages of boulders and landslides visited by the Apollo 17 astronauts in the Taurus-Littrow Valley to work out the size and frequency of the moonquakes from a nearby fault scarp. cmns.umd.edu/news-events/...

@agu.org Your website appears to be down. Is there an ETA on revival?

This Week In History: Holy Shit, Man Walks On Fucking Moon YouTube video by The Onion

This take is amazing: youtu.be/ntbInwqsqAM?...

A picture of Earth's Moon at 1st quarter.

56 years ago today humans walked on the Moon for the first time. Cannot wait to go back!

It was 56 years ago today…
🧪🔭

Happy #NationalMoonDay! 🌕 🌙 🌓 🌑

Let’s look at the Moon’s crust, which may be thinner than originally thought.

It was 56 years ago today Neil Armstrong first stepped on the moon — a worldwide event that millions tuned into, including me and my brother (even if I did fall asleep). It’s a big reason we became astronauts and a great example of what our country can do when we work together.

A sea of stars

My latest hobby? Taking pictures with my S50 Seestar telescope. A bit of the North America Nebula (on July 4th nonetheless)!

I've been away from social media for half a decade. BlueSky seems *less bad*. Going to test the waters.