Comet
A comet is a small celestial body that orbits the Sun and is composed of ice, dust, and rocky particles. As a comet approaches the Sun, its ice begins to vaporize, creating a glowing coma and a tail that can extend millions of kilometers into space. The study of comets is important for understanding the early solar system and the origins of life on Earth. Spacecraft have been sent to study comets up close, including the European Space Agency's Rosetta mission, which landed a probe on the surface of comet 67P/Churyumov-Gerasimenko in 2014. Comets can also pose a potential threat to Earth if they collide with our planet, although the likelihood of this happening is very low.
Your Previous Searches
Random Picks
- Space Travel: Space travel refers to the act of traveling beyond Earth's atmosphere into outer space. It involves the use of spacecraft, rockets, and other technologies to transport humans and/or cargo to and from space. Space travel has been a major foc ... Read More >>
- Analog Technology: Analog technology refers to the use of continuous signals for transmitting information. In the context of space and astronautical engineering, analog technology is used for communication, control, and navigation systems. Analog technology i ... Read More >>
- X-ray Diffraction: X-ray diffraction is a technique used to study the atomic and molecular structure of materials. It involves shining a beam of X-rays onto a sample and measuring the angles and intensities of the X-rays that are scattered by the atoms in the ... Read More >>
Top News
Check out this interactive map of the early universe, considered largest ever cr...
A team of astronomers have put together the largest, most detailed map of the universe ever created – and you can explore it now....
News Source: USA Today on 2025-06-12
The Vera C. Rubin Observatory is about to totally transform astronomy...
With the ability to scan the entire southern night sky every three days, the huge Vera C. Rubin Observatory could be about to start solving the mysteries of the universe, from dark matter to Planet Ni...
News Source: New Scientist on 2025-06-12
Trump's proposed science cuts will have huge consequences...
The universe will still be there to marvel at, despite brutal cuts set to hit NASA and the National Science Foundation's budgets. But the damage to future research will be long-lasting, says Chanda Pr...
News Source: New Scientist on 2025-06-11
Starlink satellites are leaking radio signals that may ruin astronomy...
Our ability to study faint radio signals from when the first stars began to form is being threatened by SpaceX's Starlink satellites, which seem to be unintentionally leaking radio signals that overpo...
News Source: New Scientist on 2025-06-09
Asteroids around Venus pose possible 'invisible threat' to Earth: Should you be ...
A swarm of large asteroids likely lurking around Venus could one day pose an "invisible threat" to Earth if left unchecked, astronomers have warned....
News Source: USA Today on 2025-06-06