Origin of earth - big bang hypothesis, PL-SQL Programming



  • Origin of life is linked to origin of earth.
  • Cosmos, the Universe originated 10-20 billion years ago by Big Bang (thermonuclear explosion).
  • Its part, a galaxy, (e.g., our Milky Way) comprises millions of stars, (our Sun is one of those).
  • Sun, its planets and satellite constitute the solar system.
  • Our earth is the 3rd planet with rocks, water & atmosphere.
  • It began as gaseous clouds of metals and non-metal atoms, later condensed to form surface rocks and boiling fluid core with gaseous atmosphere.

Chronology of events


Ago (Billion yrs)



Solar system




Oldest surviving rock


Life (Heterotrophs)


Old rock






Oldest microfossils




Photosynthetic procaryotes






  • Earth is formed by gradual condensation of interstellar dust, from which our entire solar system is presumed to be formed.
Posted Date: 10/8/2012 8:25:37 AM | Location : United States

Related Discussions:- Origin of earth - big bang hypothesis, Assignment Help, Ask Question on Origin of earth - big bang hypothesis, Get Answer, Expert's Help, Origin of earth - big bang hypothesis Discussions

Write discussion on Origin of earth - big bang hypothesis
Your posts are moderated
Related Questions
Primary Key - SQL A PRIMARY KEY specification carries an implicit NOT NULL constraint on each column of the specified key. When more than one key constraint is required, the k

Updating Tables in SQL The topic of updating by describing the assignment operator, ":=" in Tutorial D. SQL uses a different syntax for assignment, using the key word SET and

Using Savepoints The scope of the savepoint is a transaction in which it is defined. The Savepoints defined in the major transaction are not related to the savepoints defined

Project Description: I have two types of data sources. One that is a list in SharePoint and another that is an access desktop database. The access desktop database is fairly com

Keyword and Parameter Description: table_reference: This specifies a table or view that should be accessible when you execute the DELETE statement, and for that you must

Great Plains (Microsoft Dynamics) Purchases Report Project Description: I want to build a purchases report that matches the General Ledger. presently, when I join the PM20

Example of GROUP BY and COLLECT Operator Example: Using GROUP BY and COLLECT to obtain C_ER2 SELECT CourseId, CAST ( COLLECT (ROW (StudentId, Mark)) AS ROW (Studen

Providing Results of Queries Expressing queries in SQL is the (big) subject. Here I present just a simple example to give you the flavour of things to come in those chapters.

Advantages of Packages The benefits of the Packages are as shown below: Modularity The Packages encapsulate logically associated items, types, and subprograms in the

Equivalences & Rewrite Rules: If notice that as well as allowing us to prove trivial theorems, and tautologies enable us to establish that certain sentences are saying the sam