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The Mars InSight lander as depicted in an illustration with its instruments deployed on the surface of Mars. Image: NASA/JPL-Caltech

The NASA InSight lander survived a perilous descent through the thin Martian atmosphere and successfully landed on a flat part of the Red Planet on Monday at 2:54 p.m. ET. It has already transmitted its first picture back to Earth.

Why it matters: The landing marks the first robot to successfully land on Mars since NASA's Curiosity rover touched down in 2012. The InSight lander arrived on the planet after completing a nearly 300 million mile trip from Earth. It survived a descent referred to by mission controllers as "seven minutes of terror," during which time the spacecraft followed a series of predetermined maneuvers to slow it down enough for a smooth touchdown.

What it's doing there: Unlike other spacecraft sent to Mars, the InSight lander is not designed to seek signs of life, but rather to investigate the planet's interior for clues into how certain planets, including Earth, formed about 4 billion years ago.

Mission controllers celebrate the landing on Nov. 26, 2018.

What we don't know: While we know the spacecraft touched down and sent a "ping" to Earth, indicating it's alive and functioning on the planet, we don't know yet how well the spacecraft survived the rough approach.

  • Scientists are still waiting for confirmation from NASA's Mars Odyssey orbiter, which is orbiting the planet, that InSight's solar arrays have deployed.
  • The one-way time for a signal to reach Earth from Mars is 8 minutes and 7 seconds on Nov. 26, NASA stated.

The big picture: The U.S. is the only country to have successfully landed spacecraft on Mars, but a glitch-free landing was by no means guaranteed.

  • InSight will be the first spacecraft to drill down into the deep interior of Mars, and scientists hope the data it gathers will give them clues into how the planet formed.
  • The information it gathers could even shed light on how our home planet and others in our solar system evolved.
"InSight will address a fundamental issue of solar system science, not just specific questions about a single planet. By studying Mars, InSight would illuminate the earliest evolution of rocky planets, including Earth."
NASA said in a mission fact sheet
A tweet previously embedded here has been deleted or was tweeted from an account that has been suspended or deleted.

Details: The InSight lander entered the planet's atmosphere at a dizzying speed of about 12,300 mph, and friction heated the spacecraft up to 2,700°F. The spacecraft experienced about 8 times the force of gravity during its descent, according to NASA.

  • A supersonic parachute and retro-rocket thrusters worked to slow it down sufficiently for a three-legged, soft landing on the Elysium Planitia — a flat region near the planet's equator.
  • This landing differed from some of the previous rover landings, which involved a bouncing ball-like structure with the rovers sheltered inside.
  • Two miniature spacecraft, known as Mars Cube One, are following InSight, but they won't land on Mars. Instead, they'll serve as data relay stations to send information gathered by InSight to scientists on Earth. They are the first-ever CubeSats, which are a category of ultra-small satellites, to go into deep space.
  • The mission isn't entirely a NASA operation. Several European institutions have contributed to its payload, including France's Centre National d'Études Spatiales and the German Aerospace Center.

Go deeper

Rahm Emanuel questioned on murder of Laquan McDonald in confirmation hearing

Rahm Emanuel during a Senate Foreign Relations Committee confirmation hearing on Oct. 20. Photo: Sarah Silbiger/Bloomberg via Getty Images

Former Chicago Mayor Rahm Emanuel spoke about the murder of Laquan McDonald during his Senate confirmation hearing Wednesday to become the U.S. ambassador to Japan, saying that "there's not a day or a week that has gone by in the last seven years I haven't thought about this."

Catch up quick: McDonald was a Black teenager who was fatally shot 16 times by Chicago police during Emanuel's tenure as the city's mayor. The 2014 shooting triggered massive protests, both because of its nature and the fact that the officers' body-cam footage was concealed for years.

3 hours ago - World

Biden's ambassador nominee: "China is not an Olympian power"

Nick Burns testifying before the Senate Foreign Relations Committee. Photo: Sarah Silbiger/Bloomberg via Getty Images

President Biden's nominee to serve as ambassador to China delivered a stark assessment of the challenges the U.S. faces in confronting Beijing, but stressed that the rising superpower is "not all-powerful" and the West retains "substantial" advantages.

The big picture: Nicholas Burns, a retired career diplomat and former U.S. ambassador to NATO, used his confirmation hearing Wednesday to echo the growing bipartisan consensus that China poses "the greatest threat to the security of our country and the democratic world" in the 21st century.

Scoop: U.S. and Israel to form team to solve consulate dispute

Secretary of State Antony Blinken (left) and Israeli Foreign Minister Yair Lapid (right) meet in Washington. Photo: Andrew Harnik/Pool/AFP via Getty Images

The U.S. and Israel are planning to form a joint team to hold discreet negotiations on the reopening of the U.S. Consulate in Jerusalem, Israeli officials say.

Why it matters: The consulate handled relations with the Palestinians for 25 years before being shut down by then President Donald Trump in 2019. Senior officials in Israeli Prime Minister Naftali Bennett's government see the consulate issue as a political hot potato that could destabilize their unwieldy coalition.