12.5 C
New York
Friday, July 3, 2020
Home News Hubble captures a beautiful cosmic jellyfish made of glowing gas

Hubble captures a beautiful cosmic jellyfish made of glowing gas

Planetary nebula NGC 2022, located in the constellation of Orion (The Hunter), as imaged by the Hubble Space Telescope. The image was first released on 12 August 2019. ESA/Hubble & NASA, R. Wade

This image might look like a deep-space jellyfish, but it’s not a sign of extraterrestrial life — in fact, it’s a planetary nebula called NGC 2022, located in the constellation of Orion (The Hunter), which has been captured by the Hubble Space Telescope.

A planetary nebula is, rather confusingly, nothing to do with planets. It’s named that because when astronomers first observed these blobs in the sky with early telescopes, they thought that they were planets because of their round shapes. A planetary nebula is actually made of gas which has been ionized, making it glow and creating an expanding shell which pushes out into space. Such a phenomenon occurs when a red giant star reaches the end of its life and begins to eject gas, which forms the nebula.

Planetary nebulae are a subtype of emission nebulae, which are clouds of gas that are ionized by light emitted by a nearby star. In the case of NGC 2022, you can see the star shining brightly at the heart of the nebula. This star was once like our Sun, but as it aged it grew bigger and began to glow red, becoming a red giant.

When a star becomes a red giant, its outer layers of gas and other materials are gradually stripped away, being lost into space. This process can deplete a large part of the star’s material, with up to half a star’s mass being lost. This is what causes the outer shell of gas to form. While this is occurring, the dense core of the star is also shrinking and becoming hotter. The dense, hot core emits ultraviolet light which illuminates the gas shell, creating the beautiful nebula effect.

NGC 2022 is nearby and bright enough that it can be observed even with amateur telescopes. It appears as a small patch of grey light, with an apparent size of 0.65 arcminutes. It is located 1.8 degrees southeast of the luminous class O star Meissa (Lambda Orionis), in the northern part of the Orion constellation.

Editors’ Recommendations

  • The Very Large Telescope captures the beautiful remnants of a dying star

  • Practically perfect in every way: Hubble shows galaxy with amazing symmetry

  • Spitzer captures childhood, middle age, and maturity of stars in one image

  • Cosmic dust feeds star formation in this week’s Hubble image

  • Hubble captures our galactic twin, the barred spiral galaxy NGC 7773


Get a measure of privacy with YouTube’s Incognito Mode

Here's how you can watch videos on YouTube without leaving any trace of them.YouTube, one of the most popular services

How to watch Atletico Madrid vs. Mallorca La Liga live stream

Atletico Madrid are back in action tonight play host to RCD Mallorca at the Metropolitano Stadium. Don't miss a kick

PGA Tour: How to watch the 2020 Rocket Mortgage Classic online

After resuming play just four weeks ago, the PGA Tour is heading to Detroit this weekend for the second edition

Galaxy Buds Plus review, four months later: A perfect balance

These are by far my favorite true wireless earbuds.Back in February before the world fell apart, I was in an