Beginning Monday afternoon, comet Lemmon will pass about 56 million miles from Earth, while comet Swan will soar even closer, at roughly 24 million miles. Both comets are expected to peak in brightness between Monday and Tuesday.

Due to cloudy weather, this livestream was rescheduled for Oct. 24, beginning at 1:30 p.m. EDT (1730 GMT). Two comets, C/2025 A4 (Lemmon) and C/2025 R2 (SWAN), are about to reach their closest approach to Earth and you can watch the action unfold live online.

The newly discovered "twilight" asteroid, 2025 SC79, was obscured by the sun's glare until an astronomer pointed the Dark Energy Camera at it, highlighting the potential dangers of unseen asteroids.

The Orionid meteor shower is active each year from about Oct. 2 to Nov. 7, according to the American Meteor Society. This year's peak will occur in the early morning on Oct. 21-23. The Orionids are known for its brightness and speed – each meteor can streak up to 148,000 mph.

A newly discovered space rock zoomed safely by Earth on Wednesday (Oct. 15) at only about a quarter of the average distance to the moon.

Scientists are still concerned that asteroid 2024 YR4 could hit the moon in the future One of the solutions suggested is nuking the asteroid to save the moon Scientists say the plan to use nuclear weapons on an asteroid needs more research An asteroid has ...