Blown solar downwind, two separate tails are formed: one composed of dust and the other of gases. They become visible through different phenomena: the dust reflects sunlight directly, and the gases glow from ionization.

2025年1月14日 · A comet has two tails that get longer the closer it gets to the Sun. Both tails are always directed away from the Sun. The ion tail (blue) always points directly away from the Sun, while the dust tail (yellow) points away from the Sun in a …

2024年10月15日 · The "once-in-a-lifetime" comet Tsuchinshan-ATLAS looks like it has grown a physics-defying second tail after reaching its closest point to Earth for more than 80,000 years, new photos reveal.

2014年7月15日 · A combination of solar radiation pressure and solar wind blow away gas and dust from the comet’s nucleus, forming two separate tails: the ion tail and the dust tail. Ultraviolet light ionizes the neutral gas blown off the comet, and the solar wind carries these ions straight out from the Sun to form the ion tail, which typically glows blue.

2020年7月16日 · These two tails accompany many comets, including comet NEOWISE, and can show us things we might never otherwise see for ourselves about our Solar System. Here’s why there are two of them.

2024年7月25日 · Comets actually have two tails – a dust tail and an ion (gas) tail. Most comets travel a safe distance from the Sun. For example, Halley's comet gets no closer than 55 million miles (89 million kilometers).

Most comets actually have 2 tails: a plasma tail made of ionized gas, and a dust tail made of small solid particles. Comet tails point away from the Sun. As a comet accelerates towards the Sun, its surface temperature increases, and ices begin to sublimate into gaseous form.

2023年10月16日 · The dust and released gas form a cloud around the comet called a coma. This gas and dust interact with the Sun to form two different tails. The first tail, made up of gas, is called the ion...

2023年10月19日 · In a comet with two tails, one may be of ionized gas particles that are sublimated due to the action of solar wind. The other tail might be composed of the dust that gets released from the surface of the comet after the ice ionizes.

2014年7月31日 · With the rise of photographic astronomy, it was found that comets often have two types of tails. A bright tail composed of ionized gas, and a dimmer one composed of dust particles. The ion tail...