- 3955 - NANCY GRACE TELESCOPE - back in time? The Nancy Grace Roman Space Telescope will 'rewind' the universe. The powerful space telescope will take a vastly wider look at the universe than Hubble or the James Webb Space Telescope.
------------ 3955
- NANCY GRACE
TELESCOPE - back in time?
-
- The
telescope will turn back the "cosmic clock" and allow astronomers to
see space in a way they never have before. This should help scientists
understand how the universe evolved from a sea of densely packed particles into
the cosmos we see today full of stars and galaxies.
-
- Set to
launch no sooner than May 2027, Roman's power to revolutionize astronomy in
just 63 days Roman can image an amount of sky that it would take the Hubble
Space Telescope 85 years to capture.
-
- The Hubble
and James Webb Space Telescopes are optimized for studying astronomical objects
in-depth and up close, so they're like looking at the universe through
pinholes. To solve cosmic mysteries on
the biggest scales, we need a space telescope that can provide a far larger
view. That's exactly what Roman is designed to do.
-
- A patch of
sky measuring 2 square degrees, equivalent to 10 times the apparent size of the
full moon in the night sky over 5 million galaxies are represented. This same simulation can model tens of
millions of galaxies in less than a day, something that would take years with
more conventional methods.
-
- This could
include investigating the nature of dark energy, the force that is driving the
accelerating expansion of the universe , and dark matter, the substance that
is almost completely invisible despite composing around 85% of the matter in
the cosmos.
-
- How Roman
will investigate dark matter and dark energy?
Both galaxies and the clusters they sometimes form grow in
"clumps" throughout the universe that are connected by invisible
threads of dark matter. Galaxies are positioned along these dark matter
filaments at the points at which they intersect. Between these strands are
tremendous cosmic voids.
-
- This
creates a tapestry of the universe with a web-like structure extending for
hundreds of millions of light-years that can only be seen with an incredibly
broad view. This picture would look very
different to astronomers if they could view it as it appeared much earlier in
the universe's 13.7-billion-year history.
-
- Rewinding
cosmic time would reveal the early universe as a uniform primordial sea of
plasma composed of charged particles with overly dense patches that would
collapse under their own gravity to birth the first stars over the course of
hundreds of millions of years.
-
- Drawn
towards the gravitational pull of dark matter, these first stars would then
group into galaxies that will go on to evolve to be populated by planetary
systems like our solar system.
-
- Roman will
be able to look back at various stages of this progression as the universe
began to take shape. Because dark matter's gravitational influence helps
determine the distribution of galaxies, watching it aid in the formation of
early galaxies could shed light on the nature of this mysterious form of matter
as it plays its role as the universe's "invisible backbone."
-
- On a
smaller scale, this look back in time could also allow astronomers to see the
effect of dark matter as it forms invisible haloes around early galaxies, thus
revealing how they evolve individually.
Roman will also allow astronomers to rewind the recent accelerating
expansion of the universe to learn more about dark energy, the force that
drives this expansion.
-
- Because of
its broad coverage of the sky, the telescope will capture an unprecedented
number of galaxies in its field of view and the distribution of those galaxies
in our universe, which will allow us to understand the effect of dark energy on
large cosmological scales and the clustering and evolution of galaxies.
-
- Roman's
sweeping celestial surveys will be able to map the universe up to a thousand
times faster than Hubble, with the telescope moving rapidly from one
observational target to the next.
-
- Roman, who
passed away on December 26, 2018 at the age of 93, was affectionately known as
"the mother of Hubble," the nickname she earned as a result of her
tireless advocacy for new tools that would allow astronomers to study the
broader universe. This push would eventually lead to the launch of the Hubble
Space Telescope in 1990.
-
April 12, 2023 NANCY
GRACE TELESCOPE - back
in time? 3955
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--------------------- --- Thursday, April 13,
2023 ---------------------------
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