A Mars scientist shares the inside story of the NASA Curiosity rover's poignant first photo of Earth and Mars moon Phobos together in the twilight sky.

The Curiosity rover captured this image on Sept. 9, 2024, during its 4,295th Martian day (called a "sol") on Mars. It's been rumbling over Martian terrain for over 12 years, and is currently ascending the 3.4-mile (5.5-kilometer) high Mount Sharp, a place that once experienced dramatic Martian floods.

NASA's Curiosity Mars rover used its Mast Camera, or Mastcam, to capture the view of Earth setting while Phobos is rising. The image shows Phobos on the left and Earth on the right. The scene shows the sky over Texoli, a butte on lower Mount Sharp ...

French advertising holding company Publicis Groupe SA has acquired Mars United Commerce, a global marketing firm that works with online and brick-and-mortar stores.

The acquisition comes as advertising holding companies compete to help brands boost sales online and in stores.