When Earth is opposite Mars from the sun, it will appear full because you’re looking directly on the daylit side. But ...

In December 2024, the spacecraft successfully beamed an infrared laser message back to Earth from a mind-boggling distance of 494 million kilometers (307 million miles). That's more than twice the ...

The first hurdle in observing comet 3I/ATLAS is its vast distance from Earth—approximately 29 million kilometers. The instruments aboard Mars Express and ExoMars TGO are designed to capture images of ...

What makes 3I/ATLAS especially intriguing is that the comet might be three billion years older than our entire Solar System.

The comet, which flew by Mars on October 3, is estimated to be around 46 kilometers in diameter.

But speaking specifically, the organization’s Deep Space Optical Communications (DSOC) division just downlinked 15 terabits ...

Mysterious interstellar object 3I/ATLAS is hurtling through the solar system. As it continues its journey, it offers an ...

Another, even rarer view is to see our planet from the surface of another world—something, in fact, that first occurred only in 2004, when NASA’s Spirit rover on Mars snapped an image of Earth in that ...