You are not logged in.
Using Webb, researchers detected a large plume jetting from Saturn’s moon Enceladus.
https://twitter.com/ESA_Webb/status/1663561078444269568
NIRISS instrument on Webb maps an ultra-hot Jupiter-like exoplanet's atmosphere
https://phys.org/news/2023-05-niriss-in … -like.html
'Webb finds Traces of Water in an Ultra-hot Gas Giant's Atmosphere'
WASP-18 b: Viewing an Exoplanet Eclipse with NASA's James Webb Space Telescope
https://www.youtube.com/watch?v=tESt6iyMQlE
Webb analyzed the atmosphere of an ultrahot gas giant and mapped its temperatures. Despite scorching heat (nearly 5000 F or 2700 C), WASP-18 b has small amounts of atmospheric water — precisely measured due to Webb's sensitivity:
https://twitter.com/NASAWebb/status/1663927503570849792
Last edited by Mars_B4_Moon (2023-06-01 03:19:42)
Offline
STScI Announces the JWST Cycle 2 General Observer Program
https://www.stsci.edu/contents/news/jws … er-program
STScI announces the selected JWST General Observer programs for Cycle 2. This follows the review of submitted proposals by the JWST Telescope Allocation Committee, which made recommendations to the STScI Director, who approved the final selection. The selection is balanced across a wide range of science topics from asteroids and exoplanets to cosmology, with a distribution that matches the submitted proposals. More detailed information about the approved proposals is now available.
The Cycle 2 GO program includes 249 proposals for approximately 5,000 hours of JWST prime time and up to 1,215 hours of parallel time, as well as 8 archival and 8 theory proposals. This establishes the program for JWST’s second year of science operations, reflecting the aspirations of the worldwide community of observers. The selected proposals were prepared by more than 2,088 unique investigators from 41 countries, including 38 US states and territories, 14 ESA member states, and 6 Canadian provinces. Ten percent of the proposals are led by student Principal Investigators.
Offline
Has JWST Finally Found the First Stars in the Universe?
Offline
'Unexpected Discovery! Webb Just Changed Everything We Know About the Early Universe!'
Offline
James Webb Space Telescope gets satellite sidekick to aid search for habitable planets
Offline
James Webb Space Telescope sees 1st starlight from ancient quasars in groundbreaking discovery
https://www.space.com/james-webb-space- … y-universe
James Webb telescope discovers carbon compounds crucial to life in star system 1,000 light-years from Earth
https://www.livescience.com/space/cosmo … from-earth
Offline
Saturn’s Rings Shine in Webb’s Observations of Ringed Planet
Offline
James Webb is a GO for Cycle 2 Observations!
https://www.universetoday.com/162237/ja … ervations/
The James Webb Space Telescope (JWST) has accomplished some amazing things during its first year of operations! In addition to taking the most detailed and breathtaking images ever of iconic celestial objects, Webb completed its first deep field campaign, turned its infrared optics on Mars and Jupiter, obtained spectra directly from an exoplanet’s atmosphere, blocked out the light of a star to reveal the debris disk orbiting it, detected its first exoplanet, and spotted some of the earliest galaxies in the Universe – those that existed at Cosmic Dawn.
Well, buckle up! The Space Telescope Science Institute (STScI) has just announced what Webb will be studying during its second year of operations – aka. Cycle 2! According to a recent STScI statement, approximately 5,000 hours of prime time and 1,215 hours of parallel time were awarded to General Observer (GO) programs. The programs allotted observation time range from studies of the Solar System and exoplanets to the interstellar and intergalactic medium, from supermassive black holes and quasars to the large-scale structure of the Universe.
Offline
Webb locates dust reservoirs in two supernovae
https://www.spacedaily.com/reports/Webb … e_999.html
Researchers using NASA's James Webb Space Telescope have made major strides in confirming the source of dust in early galaxies. Observations of two Type II supernovae, Supernova 2004et (SN 2004et) and Supernova 2017eaw (SN 2017eaw), have revealed large amounts of dust within the ejecta of each of these objects. The mass found by researchers supports the theory that supernovae played a key role in supplying dust to the early universe.
Dust is a building block for many things in our universe - planets in particular. As dust from dying stars spreads through space, it carries essential elements to help give birth to the next generation of stars and their planets. Where that dust comes from has puzzled astronomers for decades. One significant source of cosmic dust could be supernovae - after the dying star explodes, its leftover gas expands and cools to create dust.
"Direct evidence of this phenomenon has been slim up to this point, with our capabilities only allowing us to study the dust population in one relatively nearby supernova to date - Supernova 1987A, 170,000 light-years away from Earth," said lead author Melissa Shahbandeh of Johns Hopkins University and the Space Telescope Science Institute in Baltimore, Maryland. "When the gas cools enough to form dust, that dust is only detectable at mid-infrared wavelengths provided you have enough sensitivity."
For supernovae more distant than SN 1987A like SN 2004et and SN 2017eaw, both in NGC 6946 about 22 million light-years away, that combination of wavelength coverage and exquisite sensitivity can only be obtained with Webb's MIRI (Mid-Infrared Instrument).
The Webb observations are the first breakthrough in the study of dust production from supernovae since the detection of newly formed dust in SN 1987A with the Atacama Large Millimeter/submillimeter Array (ALMA) telescope nearly a decade ago.
Another particularly intriguing result of their study isn't just the detection of dust, but the amount of dust detected at this early stage in the supernova's life. In SN 2004et, the researchers found more than 5,000 Earth masses of dust.
"When you look at the calculation of how much dust we're seeing in SN 2004et especially, it rivals the measurements in SN 1987A, and it's only a fraction of the age," added program lead Ori Fox of the Space Telescope Science Institute. "It's the highest dust mass detected in supernovae since SN 1987A."
Last edited by Mars_B4_Moon (2023-07-10 06:36:06)
Offline
'What We’re Learning about TRAPPIST-1'
Offline
JWST Sees the Most Distant Active Supermassive Black Hole
Offline
James Webb telescope detects the earliest strand in the 'cosmic web' ever seen
Offline
The power of the James Webb Space Telescope compared to Hubble
Offline
Compare Webb’s look at NGC 6822 with its NIRCam instrument versus its MIRI instrument. NIRCam (left) peers through gas and dust, spotlighting countless stars.
https://twitter.com/NASAWebb/status/1686022446413983748
Webb has captured the ‘antics’ of a pair of actively forming young stars, known as Herbig-Haro 46/47.
https://twitter.com/ESA_Webb/status/1684202421382160386
This is the most detailed portrait of these stars. Read more: esawebb.org/news/weic2319/
Offline
Saturn’s Rings Shine in Webb’s Observations of Ringed Planet
https://blogs.nasa.gov/webb/2023/06/30/ … ed-planet/
Offline
JWST is the Perfect Machine to Resolve the Hubble Tension
https://www.universetoday.com/162658/jw … e-tension/
Offline
JWST Sees Multiple Gravitational Lenses in a Massive Cluster: “The Fishhook” and “The Thin One”
Offline
Webb spotlights gravitational arcs in 'El Gordo' galaxy cluster
https://www.spacedaily.com/reports/Webb … r_999.html
Offline
How Webb Discovered a Star That Shines from the Edge of Time
Offline
Astronomers confirm Maisie's galaxy is among earliest ever observed
https://www.spacedaily.com/reports/Astr … d_999.html
This new image from the NASA/ESA/CSA James Webb Space Telescope shows galaxy NGC 6822. The NIRCam and MIRI instruments observe different components of the same galaxy: MIRI is sensitive to its gas-rich regions (yellow) and NIRCam observing its densely packed stars https://esa.int/ESA_Multimedia/Images/2 … es_of_dust
WebbSeesFarther
Offline
The Ring Nebula from Webb
Offline
the Live photo Feeds on JWST is interesting
Title: Absolute Brightness Measuremt of the Extragalactic Background Light Using Gallilean Satellites Eclipse Occultations
https://jwstfeed.com/Home/ShowFeed?sear … ede-offset
and Title: Galactic Center Astrometry
https://jwstfeed.com/Home/ShowFeed?sear … gal-center
Confirming the most massive neutron star with observations of its companion
https://jwstfeed.com/Home/ShowFeed?searchTerm=neutron
Instrument: NIRCAM/IMAGE Ultra-deep NIRCam and NIRSpec Observations Before the Epoch of Reionization
https://jwstfeed.com/Home/ShowFeed?sear … ver_nircam
Last edited by Mars_B4_Moon (2023-08-19 17:57:16)
Offline
TESS Has Found Thousands of Possible Exoplanets. Which Ones Should JWST Study?
https://www.universetoday.com/162906/te … wst-study/
There are more than 5,000 confirmed exoplanets in our galaxy. That number is going to rise significantly in the next decade. The Transiting Exoplanet Survey Satellite (TESS) has already cataloged more than 4,000 candidate exoplanets, and the PLAnetary Transits and Oscillations of stars (PLATO) is scheduled to launch in 2026. We will soon have more than 10,000 worlds where life might be able to survive. It’s an amazing idea, but with so many exoplanets we don’t have the resources to search for life on all of them. So how do we prioritize our search?
Last edited by Mars_B4_Moon (2023-08-25 04:45:25)
Offline
The mid-infrared instrument (MIRI) has given us the sharpest and clearest view of the faint halo outside the bright ring. Physical features within suggest there may be a companion star helping to sculpt the layers thrown off by the dying star.
https://twitter.com/NASAWebb/status/1693625990931488833
Webb has observed the Ring Nebula, one of the most notable objects in our skies. Formed by a star throwing off its outer layers as it runs out of fuel, the Ring Nebula is relatively close to Earth at roughly 2,500 light-years away.
Offline
JWST Plucks One Single Star out of a Galaxy Seen 12.5 Billion Years Ago
Offline