“The fact that we recorded it confirmed that the core is liquid.”
What you may not realize, NASA Jet Propulsion Laboratory geophysicist Mark Panning tells Inverse, is that those diagrams “are cartoons and guesses,” based on gravitational measurements. The only planet whose structure scientists actually understand in detail is Earth.
We know the innards of Earth through seismology measurements — something that hasn’t been available for other planets. This was true until just recently: According to a trio of papers published Thursday in Science, researchers can finally confirm Mars has a large liquid metal core.
Panning is the JPL project scientist for the NASA InSight mission, which landed a seismometer on the Red Planet in 2018 and has been recording Marsquakes ever since. NASA’s InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) lander was designed to reveal the inner structure of Mars through seismological and thermal readings taken from a landing site on Elysium Planitia, a plain along the Martian equator.
The radar-like scan moves clockwise emanating from the center point to produce pitch. Light that is further from the center is heard as higher pitches while brighter light is louder. The X-rays are represented by a harsher sound, while the visible-light data sound smoother.
Credit: NASA/CXC/SAO/K.Arcand, SYSTEM Sounds.
This morning Mural, a startup that builds digital collaboration software with a focus on visual presentation, announced that it has closed a $50 million Series C. The new capital, co-led by prior investors Insight Partners and Tiger Global, values the startup at more than $2 billion.
Previously, Mural was valued at around $500 million when it closed a $118 million round last August. Mural also raised a $23 million Series A at the start of 2020.
Mural’s product focuses around a visual collaboration space, akin to a digital whiteboard. Given its product focus, it’s not hard to see why the startup had a good COVID cycle; the world’s companies moved to remote work en masse, leaving offices empty and physical whiteboards un-scribbled. Services like Mural helped fill that, and similar voids. TechCrunch caught up with Mural CEO Mariano Suarez-Battan and Insight managing director Nikhil Sachdev to learn more about deal mechanics.