When a Planet is not a Planet
19 ژانویه 2012
This page isn't available in your language yet, if you'd like to provide a translation please contact us at info@unawe.org

It’s not just slang words, like “sick” and “wicked”, that can mean something completely different to what you would normally expect. For example, take this new picture of an object in space called a planetary nubula – it actually has nothing at all to do with planets!

A planetary nebula is an object that forms when a star like the Sun (our nearest star) runs out of fuel. When this happens it starts to collapse inwards. The star also loses its outer shells of gas, which float off into space. The gas creates beautiful patterns around its former star, like the one shown in this new photo.

The “nebula” part of the name makes sense, as this word just means “cloud” in an old language called Latin. But why is this object called a planetary nebula? Basically, when these objects were first discovered, astronomers thought that they looked similar to how the planets Uranus and Neptune look in small telescopes. And, well, sometimes names just stick!

 

نکته‌های جالب

Some planetary nebulae (when you talk about more than one nebula, you call them “nebulae”) have two symmetrical clouds of gas on either side of the central star. They look like colourful butterflies in space!

This Space Scoop is based on a Press Release from ESO.
ESO
تصویر
نسخه مناسب پرینت
ملاقه‌های فضایی بیشتر

هنوز کنجکاوید؟ بیشتر بدانید...

ملاقه‌ فضایی چیست؟

نجوم را بیشتر کشف کنید

الهام بخشیدن به نسل جدیدی از سیاحان فضا

دوستان ملاقه فضایی

تماس با ما

This website was produced by funding from the European Community's Horizon 2020 Programme under grant agreement n° 638653