Showing posts with label Astronomy. Show all posts
Showing posts with label Astronomy. Show all posts

Friday, December 1, 2023

Planet Seems Too Big for Its Host Star

 



 Astronomers have discovered a plant that is unusually large for its host star. This planet while 13 times the size of Earth orbits a star called LHS 3154 which 1/9th the size of the sun. This planet also orbited the star in just 3.7 Earth days. The key problem for naturalistic theories of planetary formation is that a planet-forming disk around as a low-mass star as LHS 3154 is not expected to have enough solid mass to produce such a large planet. 

Reference: Astronomers spot ‘overweight’ planet that appears too big for tiny host star.

Celestron - SkyMaster Giant 15x70 Binoculars

Refractor Telescope for Adults and Kids

130mm Newtonian Reflector – iPhone/Android Compatible

The Backyard Astronomer's Guide

Astronomy Activity Book for Kids

Smart People Hobby Astronomy - Funny Astronomer Gift T-Shirt


Saturday, September 6, 2014

Asteroid 2014 RC

At 2:18 p.m. on September 7 Asteroid 2014 RC   will pass 25,000 miles from Earth  or about 10% of the distancebetwen the Earth and the Moon. At just 60 feet across it is a small asteroid that will not be visible to the unaided eye. There is no danger of an impact with the Earth though it does qualify as a near miss. Even if an impact occured the explosion would be just 4 times the size of the atomic bomb dropped on Nagasaki Japan or about 90 kilotons of TNT or 
 
The Nebula Hypothesis says that asteroids a remnant from formation of the solar system but  suffers from problems such things as an imbalance of angular momentum.. Also real planets both in the solar system and among exoplanets that are not in orbits predicted by the Nebula Hypothesis. Alternative theories include an exploded or shattered planet between Mars and Jupiter. They could have originated from outside the solar system which from a creationist perspective could have been created on day four of the creation week with the rest of the universe. There is  also the idea that they formed from material ejected from Earth during the Genesis Flood.

Tuesday, April 3, 2012

Small Asteroid Comes Closer than the Moon



In what look for all the universe like a cCosmic April fools joke asteroid called 2012 EG5 passed the Earth at just 143, 000 miles which is about 100,000 miles closer than the Moon. While the 150 foot across asteroide was never in any danger of colliding with the Earth it was still close

It had been  less than a week since two smaller asteroids had come even closer. On asteroid was about the size of a bus and passed within 96,000 miles of Earth. The other asteroid was the size of a car and passed just 36,000 miles away.

Even if one of these small rocks did hit the Earth they are too small to do any real damage unless they hit a populated area.

Wednesday, January 11, 2012

The Earth may have hundreds of tiny moons

The asteroid is called 2006 RH120, and oddly enough from about 7/2006 to about 7/2007 it was a temporary moon of the Earth. Being only a few meters across and it was first thought to be a spent rocket stage but further studies showed it to be an asteroid.

The discovery of 2006 RH120 lead to a computer study that shows that at any given time the Earth probably has as many as 100 of the tiny moons at any given time, but they drift in and out of Earth orbit after staying around for a few months to a few hundred years. They tend to be small and dim making them hard to find but it is still an interesting discovery.

One value to search for them is that some are likely small enough to bring to Earth for study. Also the possibility exists of doing so a mining operation. 

Wednesday, January 4, 2012

Hyperclusters of Galaxies are to Big for Big Bang

According to the Big Bang Cosmology the Universe started out with matter vary smoothly spread through out space, with just small variations. It is thought that gravity amplified these small variations producing the galaxies and galaxy clusters seen to day. Because of the expansion of space it also predicts that such structures should not be more a few hundred million light years across.

However recently hyperclusters of galaxies have been discovered that are more than 3 billion light years across. This poses a problem for the Big Bang Cosmology which actually had already failed to predict the accelerating expansion of the universe now it’s blown this one. By the way these two are just the biggest Big Bang blunders but there are others.

This raises a question that since science is about testability and theories are test by the accuracy of their predictions, how many failed predictions will it take for the Big Bang to even be questioned.

Thursday, December 29, 2011

Martian Atmosphere found to be Supersaturated with Water.

Mars Express an ESA probe that has been orbiting Mars for several years has measured the water content of the Martian atmosphere using it’s SPICAM spectrometer. IT found that it is above that of saturation a state called supersaturating. This is the first time this type of measurement has been made on a global scale. The result will help in prove our understanding of Mar’s weather.

This result is also consistent with catastrophic Martian geology. If Mars' atmosphere had temporarily been raised to allow surface water by dust from impacts and volcanic activity, when Martian atmospheric pressure dropped as this dust settled the resulting evaporation would supersaturated atmosphere. This state would continue because the low pressure makes rain impossible so the only way to reduce it is for the water to slowly bleed off into space.

Friday, December 23, 2011

No joke, Water found on the sun!.

Yes an international team of scientists, including a chemist form the University of Waterloo has indeed found water on the sun. However before you go running off complaining that its impossible, it is extremely hot steam and not liquid water but it’s there.

The steam is found in dark sum spots and was identified by water’s spectral signature. The water produces a stellar green house effect that influences the spots output of energy.

What makes it even more interesting is that the team had discovered the spectral absorption lines that made the discovery possible. They then found the signature in data from the sun.

Friday, December 9, 2011

Two enormous suppermassive black holes Discovered.

Calling these truly massive monsters suppermassive black holes would probably be gross understatements because they dwarf the previous record of 6.3 billion times the mass of the sun. Both of these black holes are larger in dynamiter than the entire solar system and could easily swallow us whole.  
They were discovered by way of the Hubble Space Telescope and were found at the centers of other galaxies.

The smaller of the two was found at the center of galaxy NGC 3842 in the consolation Leo and has an estimated distance of about 331 million light-years. It mass is that 9.7 billion Suns but compared to other one it is actually small.

The larger one and undisputed champion of the suppermassive black holes was found at the center of galaxy NGC 4889 in the Coma constellation. This monster of a black hole has a the mass of a whopping 21 billion Suns.

Discoveries like these are show that the universe sill has many mysteries hiding in the depths of space. It needs to be noted that suppermassive black holes like this are so large that planets and even stars could fall through the event horizon intact.

Wednesday, November 2, 2011

Cosmology the Science of the Universe

Cosmology is the scientific discipline dealing with the origin, structure, and relationships of the universe and a cosmology is any theory or doctrine that describes the natural order of the universe. Every civilization has had its cosmology going as far back as is known. Such cosmologies  have usually taken the form of a philosophically based mythology. Todayincreased knowledge in Physics and Chemistry has resulted in a more scientific approach but philosophic assumptions still play a major role in Cosmology.

Edwin Hubble discovered the expansion of the Universe in 1929 by measuring the redshifts of distant galaxies. In 1998 it was discovered the expansion of the universe to be accelerating based on observations of type Ia supernovae.
Cosmic Background Radiation (CBR) is the thermal black body spectrum that is nearly uniform in every direction, It represents a temperature of 2.725 K in that it peaks in the microwave range a frequency of 160.2 GHz, with a wavelength of 1.9 mm. It was first observed in 1965 by Arno Penzias and Robert Wilson at the Bell Telephone Laboratories in Murray Hill, New Jersey. The CBR temperature fluctuations discovered by the WMAP data of the entire sky showed an average temperature is 2.725 Kelvin with tiny temperature fluctuations spanning about 0.0002 degrees Celsius.

The Big Bang Cosmology is the current establishment Cosmology. The model starts with all mater and space squeezed into an infinitesimal dot called a singularity. This infinitesimal dot suddenly underwent an extremely energetic expansion commonly described as an explosion. Over time the heat of this expansion cooled eventually forming galaxies, stars, planets and eventually us. CBR is seen as residual heat from the Big Bang red shifted by the expansion of t he universe. The Big Bang is based on three main purely philosophical assumptions. First there is absolute naturalism with no intelligents or purpose being allowed in the process. The universe is considered to be unbounded with no edge that is no point beyond which there is no mater. Finally there is the cosmological principle which states that the universe looks the same from every place. The goal is to deal with the fact that we seem to be at the center of the universe by making every place look like the center

There Other Naturalistic Cosmologies such as the steady state cosmology which has no beginning or end to the universe but requires a continual source of new matter. There is a new Cosmology called the plasma universe which depicts much of the phenomenon in universe as being electrical in nature. It is not yet fully developed.  

Creationist Cosmologies are based on three main purely philosophical assumptions. The first is God as the creative intelligents with purpose in the process. The universe viewed as bounded with an edge beyond which no mater is found. There is a center to the universe and the Earth is near it. Now this is not Geodetic because the universe does not rotate around the Earth Plugging these assumptions along with the observed expansion into relativity results in time dilation at the center where the Earth would have been producing a time line on Earth consistent with the Biblical account. CBR is seen as the light God created on day one red shifted by an expansion factor of about 3,300.

In conclusion Cosmology deals with the origin, structure, and relationships of the universe but is heavily dependent on philosophical assumptions since we only see the universe a one location that is the Earth. Evolutionary and Creationist Cosmologies are based on different assumptions producing different results for the same data.

Saturday, October 1, 2011

Looking at Astronomy.

The science that studied celestial objects and phenomena originating outside the Earth's atmosphere is called Astronomy.

Astronomy’s main activity is the observation of celestial objects measuring their properties such a mss, diameter, brightness and composition. Observations are usually made by way of some form of telescope. The types of telescopes used include visible light, radio, inferred, ultraviolet, X – ray, and gamma ray telescopes.

The telescope has produced a quantum leap in astronomy allowing observations beyond the rage of the unaided eye. Since its introduction developments in telescope technology have opened up many new ways of looking at the Universe. Professional astronomy has often come to be seen as equivalent to astrophysics

The twentieth century produced a division of astronomy into two main fields. Observational Astronomy is the acquiring of data from observations and analyzing that data using physics. Theoretical Astronomy is the development of computer models to describe astronomical objects and phenomena.

Today Observational and Theoretical Astronomy complement each other. The theoretical Seeks to explain observations and observations used to test the theoretical. Amateur astronomers have also contributed to many important astronomical discoveries making astronomy one of the few sciences that amateurs can still play an active role.

Friday, August 26, 2011

New Class of Stellar Body.

Bodies that are too small to be stars and too big to be planets called brown dwarfs have been know for years, but now a body small to be a brown dwarf and too big to be a planet has been found.
Planets like Jupiter can have a “surface” temperature below -200 degrees Fahrenheit. While brown dwarfs can have “surface” temperatures of about   +400 degree Fahrenheit. Labeled a Y-Dwarf this new body which dose not orbit a star has a “surface” temperature of around +80 degrees Fahrenheit which is around room temperature.

The Y-Dwarves are not a lone several Jupiter-sized planets with out stars have been found. It all shows we have a lot to learn about the Universe.