A Journey into the Universe

A Journey into the Universe (Nature): 

A Journey into the Universe (Nature) HK Nahan

PowerPoint Presentation: 

Nature: refers to the phenomena of the physical world, and also to life in general. It ranges in scale from the subatomic to the galactic.

PowerPoint Presentation: 

In Aristotle’s time people believed in the "final cause" – the aim or goal of something, e.g., the final cause of rain was to let plants grow. Such final goals were sought for explanation of nature’s phenomenon. Aristotle gestures to the earth, representing his belief in knowledge through empirical observation and experience, whilst Plato points up to the heavens showing his belief in the ultimate truth. Plato (left) and Aristotle (right)

Distance scale in the microcosm of nature..: 

Distance scale in the microcosm of nature..

Towards other extreme of distance scale……: 

Towards other extreme of distance scale…… Distances in Astronomy are measured in the unit – Light Year . Light Year- is the distance that is traveled by light in 1 year (1 Earth year). 1 Light Year = Centimeter 1 Parsec = 1 Mega Parsec = 10,00,000 Parsecs

Vital Statistics of the Universe: 

Vital Statistics of the Universe Present size of the Universe ~ Meters Age of the Universe ~ 11-14 Billion Years The Universe is expanding at the rate ~ Meter/Sec Composition: 74% Dark Energy (Vacuum Energy Density) 25 % Dark Matter 1 % Baryonic Matter (Atomic Forms)

Structure & Hierarchy of the Universe: 

Structure & Hierarchy of the Universe

Messier’s Catalogue: 

Messier’s Catalogue Fortunately for us, the Messier Catalog became well known for a much higher purpose, as a collection of the most beautiful objects in the sky including nebulae , star clusters , and galaxies . Today's versions of the catalog usually include also later additions of objects observed by Charles Messier and his collegial friend, Pierre Méchain , but not included in his original list.

New General Catalogue : 

New General Catalogue The New General Catalogue ( NGC ) is a well-known catalogue of deep sky objects in astronomy . It contains 7,840 objects, known as the NGC objects . The NGC is one of the largest comprehensive catalogues, as it includes all types of deep space objects and is not confined to, for example, galaxies . The NGC was published in the Memoirs of the Royal Astronomical Society as "A New General Catalogue of Nebulae and Clusters of Stars

PowerPoint Presentation: 

The North Celestial Pole (NCP) and the South Celestial Pole (SCP) lie directly above North and South Poles of Earth. We- the Earthlings We- the human beings live on the planet- called Earth. The NCP and SCP form the poles of a great circle on celestial sphere, analogous to the equator on Earth. It is called the celestial equator and it lies directly above the Earth's equator. We- the human beings live on the planet- called Earth.

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Milky Way (M40) Our Own Galaxy: 

Milky Way (M40) Our Own Galaxy

Milky Way (M40)- Our Own Galaxy……: 

Milky Way (M40)- Our Own Galaxy…… Diameter 100,000 light years Thickness 1,000 light years Number of stars 100-400 billion (1–4×10 11 ) Oldest known star 13.2 billion years Mass 5.8 × 10 11 M ☉

Milky Way (M40): 

Milky Way (M40) The Sun (and therefore the Earth and the Solar System ) may be found close to the inner rim of the galaxy's Orion Arm , in the Local Fluff inside the Local Bubble , and in the Gould Belt , at a distance of 7.62±0.32 kpc (~25,000±1,000 ly ) from the Galactic Center . The Sun is currently 5–30 parsecs from the central plane of the galactic disc. The distance between the local arm and the next arm out, the Perseus Arm , is about 6,500 light-years.

Sombrero Galaxy: M 104 or NGC 4594: 

Sombrero Galaxy: M 104 or NGC 4594

Sombrero Galaxy: M 104 or NGC 4594: 

Sombrero Galaxy: M 104 or NGC 4594 The Sombrero Galaxy (also known as M 104 or NGC 4594 ) is an unbarred spiral galaxy in the constellation Virgo . It has a bright nucleus, an unusually large central bulge, and a prominent dust lane in its inclined disk. The dark dust lane and the bulge give this galaxy the appearance of a sombrero . The galaxy has an apparent magnitude of +9.0, making it easily visible with amateur telescopes. The large bulge, the central supermassive black hole , and the dust lane all attract the attention of professional astronomers.

Life Cycle of a Star Super Novae Mature Star Red Giant Black Hole White Dwarf : 

Life Cycle of a Star Super Novae Mature Star Red Giant Black Hole White Dwarf

Trifid Nebula (M20, NGC 6514) Nursery of Stars or Factory of Stars 9000 Light Years from Earth : 

Trifid Nebula (M 20, NGC 6514) Nursery of Stars or Factory of Stars 9000 Light Years from Earth

Trifid Nebula (M20, NGC 6514) : 

Trifid Nebula (M 20, NGC 6514) M20 with amateur telescope M20 in Hubble telescope: A deep view

Crab Nebulae (M 1, NGC 1952) A supernova remnant and pulsar wind nebula in the constellation of Taurus: Located at a distance of about 6,500 light-years (2 kpc) from Earth, the nebula has a diameter of 11 ly (3.4 pc) .: 

Crab Nebulae ( M 1, NGC 1952 ) A supernova remnant and pulsar wind nebula in the constellation of Taurus : Located at a distance of about 6,500 light-years (2 kpc ) from Earth , the nebula has a diameter of 11 ly (3.4 pc ) .

Horse-head Nebula Star Forming Regions: 

Horse-head Nebula Star Forming Regions

The "Eye of God" Nebula (Also known as Helix Nebulae): 

The "Eye of God" Nebula (Also known as Helix Nebulae)

Omega Nebula M17, NGC 6618 Also called-Swan Nebula: 

Omega Nebula M 17, NGC 6618 Also called-Swan Nebula

Omega Nebula (M17, NGC 6618): 

Omega Nebula ( M 17, NGC 6618) The Omega Nebula , also known as the Swan Nebula (catalogued as Messier 17 or M17 and as NGC 6618 ) is an H II region in the constellation Sagittarius . It was discovered by Philippe Loys de Chéseaux in 1745. Charles Messier catalogued it in 1764. It is located in the rich starfields of the Sagittarius area of the Milky Way . The Omega Nebula is between 5,000 and 6,000 light-years from Earth and it spans some 15 light-years in diameter.

Cat's Eye Nebula: NGC 6543 (Also called-Snail Nebula, Sunflower Nebula) : 

Cat's Eye Nebula: NGC 6543 (Also called-Snail Nebula, Sunflower Nebula)

Cat's Eye Nebula: NGC 6543 : 

Cat's Eye Nebula: NGC 6543 The Cat's Eye Nebula ( NGC 6543 ) is a planetary nebula in the constellation of Draco . Structurally, it is one of the most complex nebulae known, with high-resolution Hubble Space Telescope observations revealing remarkable structures such as knots, jets, bubbles and sinewy arc-like features. In the center of the Cat's Eye there is a bright and hot star, which around 1000 years ago lost its outer envelope producing the nebula.

Ant Nebula (Menzel 3 or NGC 2392) : 

Ant Nebula (Menzel 3 or NGC 2392)

Ant Nebula (Menzel 3 or NGC 2392) : 

Ant Nebula (Menzel 3 or NGC 2392) A remarkable bipolar or "butterfly" planetary nebula in the constellation Norma , whose outflow speeds, of up to 3.5 million km/h, surpass those of any other known object of its type. visual magnitude 13.8 angular size 1.6' × 0.6' linear size (length) 1.6 light-years (0.5 pc)

Hour-glass Nebula: ESO 97-1: 

Hour-glass Nebula: ESO 97-1

Hourglass Nebula: ESO 97-1: 

Hourglass Nebula: ESO 97-1 The Engraved Hourglass Nebula (also known as MyCn 18 ) is a young planetary nebula situated in the southern constellation Musca about 8,000 light-years away from Earth . Much improved telescopes and imaging techniques allowed the hourglass shape of the nebula to be discovered by Raghvendra Sahai and John Trauger of the Jet Propulsion Laboratory on January 18, 1996.

PowerPoint Presentation: 

Cone Nebula NGC 2264

Eskimo Nebula: NGC 2392 : 

Eskimo Nebula: NGC 2392

Eskimo Nebula: NGC 2392: 

Eskimo Nebula: NGC 2392 The Eskimo Nebula ( NGC 2392 ), also known as the Clownface Nebula . It was discovered by astronomer William Herschel in 1787 . The formation resembles a person's head surrounded by a parka hood. It is surrounded by gas that composed the outer layers of a Sun-like star . NGC 2392 lies more than 2,870 light-years away and is visible with a small telescope in the constellation of Gemini . Radius ≥0.34 ly

Black –Hole Detection by Thermal Imaging Technique: 

Black –Hole Detection by Thermal Imaging Technique

Set out for further journey: 

Set out for further journey You are now fellow sailors in this jouney Have a plunge into the greater depths... Explore it more.......... Enjoy it more and more........... Wish you a thrilling and pleasant times.....