News

NASA s Webb catches Tarantula Nebula

September 7, 2022 04:04 PM


A stellar nursery nicknamed the Tarantula Nebula has been captured in crisp detail by NASA's Webb telescope, revealing hitherto unseen features that deepen scientific understanding, the agency said Tuesday.

Officially known as 30 Doradus, the region of space is characterized by its dusty filaments that resemble the legs of a hairy spider, and has long been a favorite for astronomers interested in star formation.

Thousands of young stars, distant background galaxies, and the detailed structure of the nebula's gas and dust structures were viewable for the first time thanks to Webb's high resolution infrared instruments.

Webb operates primarily in the infrared spectrum, because light from objects in the distant cosmos has been stretched into this wavelength over the course of the universe's expansion.

The telescope's primary imager, Near-Infrared Camera (NIRCam), found the cavity in the center of the nebula was hollowed out by radiation carried on stellar winds emanating from a cluster of massive young stars, which appear as pale blue dots.

Webb's Near-Infrared Spectrograph (NIRSpec), which analyzes light patterns to determine the composition of objects, caught one young star in the act of shedding a cloud of dust from around itself.

The same star was previously thought to be at a later stage of formation, already well on the way to clearing its dusty bubble.

The region was also imaged using the Mid-infrared Instrument (MIRI), which uses longer wavelengths of infrared to pierce through dust grains that absorb or scatter shorter wavelengths.

This faded the hot stars and clarified the cooler regions, revealing never-before-seen points of light within the stellar nursery, which indicate protostars that are still gaining mass.

Astronomic interest in the Tarantula Nebula stems from its similar chemical composition to gigantic star-forming regions observed a few billion years after the Big Bang, a period called the "cosmic noon" when star formation peaked.

At just 161,000 light-years away, Tarantula is a readily viewable example of this flourishing period of cosmic creation.

Webb should also provide scientists the opportunity to gaze at distant galaxies from the actual era of cosmic noon, and compare it to observations of Tarantula, to understand similarities and differences.

Operational since July, Webb is the most powerful space telescope ever built, with astronomers confident it will herald a new era of discovery.



Most Read

  1. Is Aroosa Khan Iqrar ul Hassan’s third wife? Is Aroosa Khan Iqrar ul Hassan’s third wife?
  2. Statement of fourth witness in Imran’s illegal Nikah case recorded Statement of fourth witness in Imran’s illegal Nikah case recorded
  3. Ducky Bhai's wife recites ‘Astaghfirullah’ after her husband goes BALD Ducky Bhai's wife recites ‘Astaghfirullah’ after her husband goes BALD
  4. Mehar Bano’s bold dance at sandy beach infuriates many Mehar Bano’s bold dance at sandy beach infuriates many
  5. Pakistani ex-employee of iPhone introduces smartphone alternative device Pakistani ex-employee of iPhone introduces smartphone alternative device
  6. Pakistani rupee rises for 6th straight time against US dollar in interbank Pakistani rupee rises for 6th straight time against US dollar in interbank

Opinion

  1. India’s endgame in Kashmir is consummation of settler-colonial occupation; Kashmiris’ goal is to uproot it
    India’s endgame in Kashmir is consummation of settler-colonial occupation; Kashmiris’ goal is to uproot it

    By Tariq Ahmed

  2. Journey of Compassion: Diplomatic Aid Unveiled in Jinping County, Yunnan, Through the Eyes of International Journalists
    Journey of Compassion: Diplomatic Aid Unveiled in Jinping County, Yunnan, Through the Eyes of International Journalists

    By Ali Ramay

  3. TPNW can prevent nuclear disaster in South Asia
    TPNW can prevent nuclear disaster in South Asia

    By Dr Ghulam Nabi Fai

  4. Political Opportunism and the 18th Constitutional Amendment
    Political Opportunism and the 18th Constitutional Amendment

    By Muhammad Asad Ayaz

  5. Battling the Teeth: The Growing Threat of Dog Bites
    Battling the Teeth: The Growing Threat of Dog Bites

    By Dr Asif Channer