A tiny spacecraft just snapped some of the most breathtaking portraits of our planet you’ll ever see—on its way to an asteroid once feared as a potential Earth killer. And this mission isn’t just about pretty pictures; it’s about watching, in real time, how a space rock changes when it brushes dangerously close to our world.
A dramatic flyby with a purpose
NASA’s OSIRIS-APEX spacecraft recently flew past Earth at incredible speed, using our planet’s gravity like a cosmic slingshot to hurl itself toward the notorious asteroid Apophis. During this close pass on September 23, the probe captured high-detail images of Earth as it skimmed just about 2,136 miles (3,438 kilometers) above the surface—closer than many navigation satellites orbit today. These images are not only visually stunning; they also act as a health check, confirming that the spacecraft’s cameras and instruments are working perfectly after spending years in deep space.
From Bennu to Apophis: a mission reborn
OSIRIS-APEX is essentially the second act of NASA’s OSIRIS-REx mission, which successfully collected and returned samples from the near-Earth asteroid Bennu in 2023. Instead of retiring a functioning spacecraft after that historic delivery, NASA redirected it toward a new target: Apophis, a stony, metal-rich near-Earth asteroid very different from Bennu’s carbon-heavy makeup. This contrast gives scientists a rare chance to compare two very different types of asteroids up close—and to revisit the story of Apophis, which at one time sparked real concern because early calculations suggested a non-negligible chance of it hitting Earth.
The 2029 close pass: thrilling or worrying?
The gravity assist from Earth was carefully planned to place OSIRIS-APEX on the right trajectory to meet Apophis shortly after the asteroid makes its dramatic flyby of our planet on April 13, 2029. During that event, Apophis will pass closer than many of our satellites, sliding well inside the ring of common geostationary orbits. At such close range, Earth’s tidal forces could literally reshape Apophis—potentially rearranging its surface material, altering its spin, or even tweaking its orbit. Here’s where it gets controversial: some people see this close approach as an alarming reminder of how vulnerable we are to cosmic impacts, while others view it as a once-in-a-lifetime science opportunity that proves our tracking and prediction systems work.
OSIRIS-APEX’s plan at Apophis
Once OSIRIS-APEX reaches Apophis, it is expected to spend about a year and a half in the asteroid’s vicinity. During that time, the spacecraft will map the surface in detail, analyze its composition, and gather high-resolution images to see what changed during the close encounter with Earth. Mission designers even plan a bold maneuver: they want the spacecraft to hover just a few meters above the asteroid and fire its thrusters downward, deliberately blasting the surface to stir up dust and expose fresher, previously buried material—almost like gently “digging” without ever touching down. This raises an intriguing question: could deliberately disturbing an asteroid’s surface, even for science, subtly influence its long-term evolution, and how comfortable should humanity be with that level of hands-on experimentation?
How the spacecraft sees Earth and beyond
The newly released images of Earth were captured with OSIRIS-APEX’s MapCam, an imager equipped with red, green, and blue filters to produce rich, color views of planets and asteroids. Another instrument, StowCam, can record both still images and video and was originally designed to visually confirm that samples collected from Bennu were safely stored. Repurposing these cameras for the Apophis mission is a clever way to extend their usefulness, turning hardware built for one asteroid into a powerful tool for exploring another. And this is the part most people miss: much of modern deep-space exploration is about reusing and reimagining existing spacecraft instead of building new ones from scratch, which raises an interesting debate about when to upgrade and when to simply start over.
What comes next for the mission
As OSIRIS-APEX continues its journey, it will regularly send back updates on its flight path and perform additional checks on its instruments to keep everything calibrated for the 2029 encounter. Eventually, it will deliver humanity’s first up-close look at how a near-Earth asteroid reacts right after skimming past a planet’s gravitational field. Scientists hope these observations will improve models of how asteroids evolve over time and how they might respond to gravitational nudges—knowledge that could one day be crucial if humanity ever needs to deliberately deflect a hazardous object. But here’s where opinions could differ: does watching Apophis this closely primarily help protect Earth in the future, or does it mostly satisfy scientific curiosity with only indirect planetary-defense benefits?
A quick nod to the storyteller
The original report on this mission was written by science journalist Samantha Mathewson, who brings a background in both journalism and environmental science to her coverage. Outside her work on space and astronomy, she enjoys traveling and photography—fitting for someone chronicling a spacecraft that also spends its time taking remarkable pictures far from home. Her style reflects a growing trend in science communication: blending rigorous reporting with an accessible, human touch that helps non-experts feel connected to complex space missions.
Your turn: what do you think?
Apophis will pass closer than many satellites and may literally be reshaped by Earth’s gravity while we watch—does that excite you, worry you, or both? Do you think bold maneuvers like firing thrusters at an asteroid’s surface are a necessary step in learning how to protect our planet, or are we starting to interfere too much with natural celestial bodies? Share whether you see this mission as a triumph of smart reuse and planetary defense, or as an example of humanity pushing its influence a little too far into deep space.
