Seeing comets with the naked eye from Earth is rare, so it is likely that there are currently no comets visible. Astronomers expect at least three comets will be visible from Earth in 2015.Know More
The comets astronomers predict seeing from Earth in 2015 are 88P/Howell, C-2014 Q1 PanSTARRS and C/2013 US10 Catalina. The Howell comet should be visible from the southern hemisphere from April to May. PanSTARRS will be visible from the southern hemisphere beginning in July. Catalina is expected to be the only comet visible in the northern hemisphere. It will likely appear in November or December.
A comet becomes visible to the naked eye when its orbit takes it close to the sun. A comet absorbs solar energy and outgasses, creating a tail of gas and dust that reflects light.Learn more about Comets & Asteroids
Meteors from Mars arrive on Earth as the result of impacts on the planet by other bodies, which launch material out into space. Some of this debris is pulled in by the gravity of the Earth, falling as Martian meteorites.Full Answer >
For most of the year, Venus is visible to the naked eye. The exception to this is when Venus is too close to the sun to be observed.Full Answer >
According to the Lunar and Planetary Institute, the nucleus of a comet is usually 1 to 10 kilometers across, and the tail stretches tens of millions of kilometers. A comet’s nucleus is a stable, porous mass of dust, ice and gas.Full Answer >
The famous comet that returns to our night sky every 76 years is called Halley's comet, or Comet Halley. However, 76 years is an average time for Halley's return; gravitational perturbations and nongravitational effects such as offgassing on solar approach also influence when exactly Halley's comet will show up.Full Answer >