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Comet Lemon to make closest approach to earth on Tuesday Stargazers in Philadelphia and beyond will be treated to a rare celestial sight Tuesday as Comet Lemmon makes its closest approach to earth.

The image shows a bright comet appearing to twist together with the glowing trail of a meteor, a moment described as a coincidence of cosmic scale. Gianluca Masi, an astronomer and founder of the ...

The green comets visible in the night sky are now at their minimum distance from Earth, so they should be at their brightest in the night sky. Comet Lemmon (also called C/2025 A6) and Comet SWAN ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Comet C/2023 A3 (Tsuchinshan-ATLAS) streaks across the sky ...

For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the ...

Two comets are set to light up the night sky, one of which will not be seen again for over 1,000 years. C/2025 R2 (SWAN) and C/2025 A6 (Lemmon) are expected to be visible across the country this month ...

What if life on Earth didn’t originate here at all? From organic molecules found on comets to evidence that life appeared almost immediately after Earth cooled, the timeline keeps collapsing in on ...

Three newly discovered green comets are currently visible from Earth with the help of binoculars or a telescope, and a fourth—an interstellar visitor—will become visible again soon. Their unusual ...