Transcript Nebulas & Stars

Nebulas are made up of gas left behind by
stars forming or exploding
There are different classes of Nebulas
The classes are: Reflection Nebulae, Emission
Nebulae, Dark Nebulae, Planetary Nebulae,
Supernova Nebulae
The word nebula comes from Ancient Roman
and European times when Latin was the main
language in the western world, and was used to
describe most scientific terms
In Latin, the word nebula means a cloud, or a
mist, or a vapor
Nebulae is the plural of Nebula
Nebulae come in many different shapes and
sizes
Emission nebulae are clouds of high
temperature gas
Life couldn’t exist on a Nebula because it’s a
cloud
Nebulae are part of a stars formation, it’s how
they are born
Crab Nebula
Charles Messier was the first
to discover a nebula
He was originally looking for
comets but he found a few
smudges of color in the sky
William Herschel discovered
the first nebula ever, it was a
Crab Nebula
stars are hot balls of
hydrogen and helium,
with nuclear fusion at
their core
They can live billions
and even trillions of
years, consuming their
hydrogen fuel
But ancient peoples
had no idea what they
were
stars played a part
in most religious
ceremonies, and
The sun is the
closest star to
Earth
It’s located
about 150 million
km away
The distances
to stars in space
is huge
Even the
The smallest stars out there are
the tiny red dwarfs
Red Dwarf stars have 7.5% the
mass of the Sun
The color of the star depends on
the temperature
The coolest stars are red and the
hottest colors are blue
Types of stars: red dwarfs, brown
dwarfs, super giants, neutron stars,
there is no way
that there could
be life on a star
because stars
are hot bodies of
glowing gas.
If someone
decided to try to
go to a star they
wouldn’t be able
A pulsar is a neutron
star that emits beams of
radiation that sweep
through Earth's line of
sight
diagram of a pulsar
showing its rotation axis,
its magnetic axis, and its
Pulsars seem to pulse
from our view because
the rotation of the
neutron star causes the
beam of radiation
Pulsars were
discovered by Jocelyn
Bell at Cambridge
University in 1976
A pulsar is a very
dense, rapidly spinning,
and electro-magnetic
radiation emitting
neutron star
Scientist still don’t
know what makes
pulsars spin so rapidly
A pulsar usually has
a radius of 8-16
What a Pulsar is
made up of
The closest Pulsar to
the Earth is 200
kilometers away
Pulsars usually die
based on the size of it
There are three different
types of pulsar: rotationpowered pulsar,
accretion-powered pulsar,
and magnetars
Besides being a
neutron star, it has small
size, solar mass of
material, mostly neutrons,
The sphere in the middle
represents the neutron star, the
curves indicates the magnetic
field lines and the protruding
Quasars are extremely
bright masses of energy and
light
The name quasar is
actually short for quasistellar radio source or
quasi-stellar object
Quasars are the brightest
objects in our universe,
although to see one through
a telescope they do not look
that bright at all
Quasars are extremely
Quasars appear as faint
red stars to us
A quasar is believed to
be a super massive black
hole surrounded by an
accretion disk
An accretion disk is a
flat, disk like formation of
gas that rapidly spirals
around a larger object,
like a black hole, a new
star, or a white dwarf
It is very hard to be able
Quasars are generally
considered to be 10 to 12
billion light years away
First quasar to ever be
discovered was the EC- 273
But, the closest Quasar
is PKS-2349 which is only
about 1500 million light
years away from Earth
Quasars can live for a
very long time scientists
say that quasars that were
discovered around 35
PKS-2349
Quasar
Some physical characteristics of a Quasar is: star
like object identified with a radio source, changeable
light, large change of radiation, wide emission, and
large red shifts
It is impossible to live on a Quasar because it is to
bright where you could go blind
• Nebulas are made up of gas left behind by stars
forming or exploding
• stars are hot balls of hydrogen and helium, with
nuclear fusion at their core
• A pulsar is a neutron star that emits beams of
radiation that sweep through Earth's line of sight
• Quasars are extremely bright masses of energy and
light
• The name quasar is actually short for quasi-stellar