Mysterious Voyagers: Are We Drinking Water Delivered by Dark Comets?
A University of Michigan study reveals that up to 60% of near-Earth objects may be dark comets, containing ice that might have contributed to Earth’s…
Comets are small celestial bodies that orbit the Sun, primarily composed of frozen gases, dust, and rocky material. They are often described as “dirty snowballs” or “icy dirtballs,” depending on their predominant composition. As a comet approaches the Sun, the heat causes its icy components to sublimate (turn directly from solid to gas), creating a glowing coma (the nebulous envelope around the nucleus) and often a tail that extends away from the Sun. These tails are made visible by sunlight reflecting off the comet’s dust and by the solar wind interacting with the gas. Comets are known for their spectacular appearances and unpredictable behavior, and they have been observed and recorded by humans for thousands of years. They are of great scientific interest because they are believed to be pristine remnants from the formation of the solar system, potentially holding clues about the early solar system’s conditions and the origin of organic molecules on Earth.
A University of Michigan study reveals that up to 60% of near-Earth objects may be dark comets, containing ice that might have contributed to Earth’s…
A recent study exploring the development of comets suggests that objects in deep space, such as the Kuiper Belt Object 486958 Arrokoth, might act as…
A surprise appearance of a new comet made the April 8th total solar eclipse all the more memorable. Any dedicated ‘umbraphile’ will tell you: no…
Comet SOHO-5008 was discovered by a citizen scientist and captured during a solar eclipse on April 8, 2024, before it disintegrated near the Sun, showcasing…
SOHO, intended for solar observation, has become a prolific comet finder, with the 5,000th comet discovery marking a significant milestone and showcasing the contribution of…
Eighteen years following the return of NASA’s Stardust mission to Earth, which brought back the first samples from a known comet, the true nature of…
Cambridge researchers propose that comets could transport life’s building blocks to other planets, especially in ‘peas in a pod’ systems. Their findings suggest that these…
Of all the objects in the Solar System, perhaps the most spectacular are the great comets that occasionally grace our skies. If you’ve been on…
Dr. Kevin C. Nolan and a team of scholars refuted a paper claiming a comet explosion caused the decline of the Hopewell culture 1,500 years…
The James Webb Space Telescope’s latest discovery is a tale of two detections. Solar system scientists took NASA’s James Webb Space Telescope on a treasure…
Scientists discovered that asteroid Phaethon, the source of the Geminid meteor shower, has a tail made of sodium, not dust. This finding challenges 14 years…
The Lyrid meteor shower peaks on April 23 with up to 15 meteors per hour. The shower is one of the oldest in history, with…
2017 comet’s unusual acceleration explained by hydrogen outgassing from ice. In 2017, a mysterious comet dubbed ‘Oumuamua fired the imaginations of scientists and the public…
Comet strikes on Jupiter’s moon Europa could help transport critical ingredients for life found on the moon’s surface to its hidden ocean of liquid water…
Comets are cosmic snowballs, the frozen leftovers from the formation of the solar system composed of frozen gases, dust, and rock. They range in size…
In 2019, the European Space Agency (ESA) selected Comet Interceptor as a new fast-class (F-class) mission. These missions, where “fast” refers to development speed, are…
What Is a Comet? A comet is an icy, rocky mass that has passed close by the Sun within our Solar System, and has thus…
For the past thirty years, astronomers have been fascinated with the star ß Pictoris because it allows them to observe a young planetary system in…