Tectonic activity on the surface of Mars. Photo: NASA/JPL-Caltech/University of Arizona

Mars shakes with quakes more often than scientists initially expected, according to a new series of studies using data from NASA's InSight lander published this week.

Why it matters: Mars looks like a cold, dead world, but its geology is complicated. The InSight lander, which has been studying the Red Planet from its surface since 2018, is giving scientists a fuller picture of the rusty world.

Details: According to NASA, InSight has recorded more than 450 signals from seismic activity so far, with the largest quake measuring in at about 4.0 magnitude.

  • At the end of 2019, InSight was, on average, measuring seismic signals twice per day, according to the agency.
  • The new research shows two relatively strong marsquakes were tracked to the Cerberus Fossae region, where scientists found volcanic activity that may have been responsible for the shakes.
"If you just take a simple model of Mars, you wouldn't expect it to be hot enough inside to be producing magma. So, what it says is that there's probably some variability at depth that the source of which is not obvious at the surface."
— Suzanne Smrekar, an author of the new study, said during a press conference

Be smart: Mars doesn't have plate tectonics the way Earth does. Instead, these quakes are likely caused by volcanic regions shaking the world or the cooling and contracting of the planet itself.

Go deeper: Where to hunt for life on Mars

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Trump: Ruth Bader Ginsburg "led an amazing life"

Trump speaking in Bemidji, Minnesota, on Sept. 18. Photo: Brendan Smialowski/AFP via Getty Images

President Trump said Supreme Court Justice Ruth Bader Ginsburg "led an amazing life," after he finished a campaign rally in Bemidji, Minnesota, and learned of her death.

What he's saying: "I’m sad to hear,” Trump told the press pool before boarding Air Force One. "She was an amazing woman, whether you agree or not, she was an amazing woman who led an amazing life."

Trump, McConnell to move fast to replace Ginsburg

Photo: Alex Wong/Getty Images

President Trump will move within days to nominate his third Supreme Court justice in just three-plus short years — and shape the court for literally decades to come, top Republican sources tell Axios.

Driving the news: Senate Majority Leader Mitch McConnell and Senate Republicans are ready to move to confirm Trump's nominee before Election Day, just 46 days away, setting up one of the most consequential periods of our lifetimes, the sources say.

What they're saying: Ruth Bader Ginsburg was a "tireless and resolute champion of justice"

Ruth Bader Ginsburg speaking in February. Photo: Sarah Silbiger/Getty Images

Democratic and Republican lawmakers along with other leading figures paid tribute to Supreme Court Justice Ruth Bader Ginsburg, who died on Friday night at age 87.

What they're saying: “Our Nation has lost a jurist of historic stature," Chief Justice John Roberts said. "We at the Supreme Court have lost a cherished colleague. Today we mourn, but with confidence that future generations will remember Ruth Bader Ginsburg as we knew her — a tireless and resolute champion of justice.”