Today's Headlines - 19 August 2023
JWST discovered Earendel
GS Paper - 3 (Space Technology)
Astronomers have embarked on an extraordinary journey, utilizing the powerful gaze of the James Webb Space Telescope (JWST), to measure the most distant star ever observed - Earendel. This celestial entity came into the scientific spotlight after its discovery by the Hubble Space Telescope in the previous year.
Earendel and history of the universe
The awe-inspiring expansion of the universe since the Big Bang has propelled Earendel's residence to a colossal 28 billion light-years from Earth.
This revelation underscores the dynamic and evolving nature of the cosmos, where space itself unfurls over immense timescales.
Earendel's presence in the distant reaches of the universe was initially pinpointed through the phenomenon of gravitational lensing, a phenomenon where the gravitational pull of a massive foreground object acts like a lens, bending and amplifying the light of a more distant celestial body. This allowed Hubble to identify Earendel's distant glow.
What is Earendel?
Earendel is a distant star that holds the distinction of being the most distant star ever detected.
It was first discovered by the Hubble Space Telescope and has recently been studied further using the James Webb Space Telescope.
Earendel's light has taken approximately 12.9 billion years to reach Earth, meaning that it was shining not long after the universe's creation following the Big Bang.
This star is of significant interest due to its extreme distance and the insights it can provide about the early universe.
JWST's exploration of Earendel
The James Webb Space Telescope, with its unique vantage point and ability to observe in infrared light, built on Hubble's observations.
Employing a similar strategy of gravitational lensing, JWST used the gravitational influence of a cluster named WHL0137-08 to further explore Earendel's mysteries.
The telescope's Near-Infrared Camera (NIRCam) provided captivating insights, revealing Earendel to be a massive B-type star, boasting a temperature more than twice that of our sun and shining with a luminosity a million times greater.
What is JWST?
The James Webb Space Telescope (JWST) is a powerful astronomical observatory developed by NASA in collaboration with the European Space Agency (ESA) and the Canadian Space Agency (CSA).
It is designed to be the successor to the Hubble Space Telescope and is set to provide unprecedented views of the universe in infrared light.
#upsc #news #headline #JWST #discovered #earendel #spacetechnology #telescope #hubble #space #telescope #bigbang #universe #colossal #earth #dynamic #cosmos #history #gaze #journey #billion #massive #gravitational #exploration #NIRcam #influence #cluster #temperature #astronomical #canadian #light #sun
JWST discovered Earendel
GS Paper - 3 (Space Technology)
Astronomers have embarked on an extraordinary journey, utilizing the powerful gaze of the James Webb Space Telescope (JWST), to measure the most distant star ever observed - Earendel. This celestial entity came into the scientific spotlight after its discovery by the Hubble Space Telescope in the previous year.
Earendel and history of the universe
The awe-inspiring expansion of the universe since the Big Bang has propelled Earendel's residence to a colossal 28 billion light-years from Earth.
This revelation underscores the dynamic and evolving nature of the cosmos, where space itself unfurls over immense timescales.
Earendel's presence in the distant reaches of the universe was initially pinpointed through the phenomenon of gravitational lensing, a phenomenon where the gravitational pull of a massive foreground object acts like a lens, bending and amplifying the light of a more distant celestial body. This allowed Hubble to identify Earendel's distant glow.
What is Earendel?
Earendel is a distant star that holds the distinction of being the most distant star ever detected.
It was first discovered by the Hubble Space Telescope and has recently been studied further using the James Webb Space Telescope.
Earendel's light has taken approximately 12.9 billion years to reach Earth, meaning that it was shining not long after the universe's creation following the Big Bang.
This star is of significant interest due to its extreme distance and the insights it can provide about the early universe.
JWST's exploration of Earendel
The James Webb Space Telescope, with its unique vantage point and ability to observe in infrared light, built on Hubble's observations.
Employing a similar strategy of gravitational lensing, JWST used the gravitational influence of a cluster named WHL0137-08 to further explore Earendel's mysteries.
The telescope's Near-Infrared Camera (NIRCam) provided captivating insights, revealing Earendel to be a massive B-type star, boasting a temperature more than twice that of our sun and shining with a luminosity a million times greater.
What is JWST?
The James Webb Space Telescope (JWST) is a powerful astronomical observatory developed by NASA in collaboration with the European Space Agency (ESA) and the Canadian Space Agency (CSA).
It is designed to be the successor to the Hubble Space Telescope and is set to provide unprecedented views of the universe in infrared light.
#upsc #news #headline #JWST #discovered #earendel #spacetechnology #telescope #hubble #space #telescope #bigbang #universe #colossal #earth #dynamic #cosmos #history #gaze #journey #billion #massive #gravitational #exploration #NIRcam #influence #cluster #temperature #astronomical #canadian #light #sun