James Webb; looking into the Genesis of our Universe

 

The James Webb telescope is on its month-long journey to Lagrange point L2 after its successful launch on December 25, 2021.  Point L2 is almost 1 million miles away from the Earth.

The Webb will look beyond to what the Hubble has already looked at.  As more distant objects are more redshifted and their light is in the near-infrared their observation requires an infrared telescope this is why the Webb was designed for.

The Webb will be able to look at the first galaxies and the first stars after the Big Bang, at the Genesis of our Universe .

View of the Andromeda galaxy taken by the Herschel Space Observatory an infrared telescope built by the European Space Agency.  The primary difference between the Webb and Herschel is their wavelength range and also the diameter of Webb's mirror is 6.5 meters and the Herschel's 3.5 meters.  The Hubble, the Webb and the Herschel will provide information that will allow astronomers to look and understand the early phases of our Universe.

The James Webb on Jan 24, 2022 reached its orbit 1 million miles from Earth and will begin looking back to the time the first starts and galaxies were forming 13.7 billion years ago and provide information about the origin of our Universe. 

                                     Credit to all images is due to NASA and ESA.

The Ultimate Journey

Although black holes have been studied for decades, all the images you’ve ever seen of them have been computer simulations or artist’s conceptions, until now.

On April 10, 2019, astronomers unveiled the first photo of a black hole, which is 6.5 billion times more massive than our sun. It is located in the center of the galaxy M87, 55 million light-years from Earth. The image shows a bright ring caused by superheated gas falling into the hole as the light bends in the intense gravity around the hole.

To obtain the image, astronomers used the Event Horizon Telescope, an idea that first Prof Falcke suggested, that links eight ground based telescopes around the globe to form an Earth-sized virtual telescope. Its Earth-sized scale gives it sensitivity and resolution that’s truly unparalleled. 

Black holes have raised complex questions about the nature of space and time and therefore "their existence is making astronomers ecstatic, as they were able to see the unseeable and the one-way portal to eternity", Dr. Doeleman, a lead scientist said.  This is a remarkable accomplishment of the human species thus the term Homo Sapiens is well deserved.

It is my hope that future generations continue channeling their energies and intelligence in projects like this for the good of all species on our planet and out of respect for the cosmos.

We are in awe by the progress in science illustrated here and seen in many other scientific endeavors. When I posted this, I learned about the passing of George Paulson, a highly respected physician and renowned researcher, historian and devoted family man. A man of good will who was always helpful to his patients and fellow men. We all share his dream that progress in the sciences and medicine will reduce the suffering from disease. We also hope that the advances in science will be accompanied by progress in our society to provide for the ill and disadvantaged. I consider this as Dr. Paulson’s legacy.

Oumuamua

On October 19, 2017, astronomers at Hawaii’s PanSTARRS telescope detected an object in the sky that was moving unusually fast and likely had originated from another solar system. As it was the first interstellar object to be detected within our solar system, they named it Oumuamua, the Hawaiian word for a scout or messenger. (Artist depiction in Wikipedia)

An article at Scientific American describes six unusual facts about Oumuamua. The first one being that astronomers didn’t expect such an object to exist but the most unusual fact about it is that it deviates from an orbit that is shaped by the gravitational force of our sun. As the object is moving, in a hyperbolic trajectory, the question arises what gives it the extra acceleration.  As Oumuamua’s acceleration has not been seen with asteroids astronomers wandered whether the object may be an Unidentified Foreign Object sent to our solar system by an alien civilization.

It is known that there are conditions similar to those on Earth in a quarter of all planetary systems around other stars and there are 100 billion stellar systems in our galaxy the Milky Way.  Also 100 billion galaxies exist in the known universe making the existence of other intelligent beings elsewhere likely.  Could other intelligent beings send a scout to observe our solar system?  Future discoveries about the Cosmos will unravel mysteries such as Oumuamua, fast radio bursts, or what happens to space-time inside a black hole.

Travelling to a Distant Earth-like Planet

Astronomers have discovered a planet nearly the size of Earth, where water might exist as a life-giving liquid.  Known officially as Kepler-186f, the planet is the outermost of five Earth-size planets orbiting in that star's solar system.  Given its small size, the researchers believe that Kepler-186f is most likely a rocky planet.  The planet cannot been seen directly, but was detected by measuring the periodic dip in light as it passes in front of its star.

It will take 459 light years to travel to Kepler-186f, the planet around a relatively small, cool, reddish star in the constellation Cygnus.  Kepler-186f is the ninth potentially habitable planet that was confirmed recently, but this one is the first so close in size to Earth that is located within its star's so-called habitable zone, where it receives the right amount of solar radiation so that water there wouldn't boil or freeze.

Once the stuff of science fiction, such habitable planets may be common in the cosmos with as many as 40 billion Earth-like planets in our Milky Way.

The Cosmic Odyssey has started.