Mass

In physics, mass is a property of a physical body. It is generally a measure of an object's resistance to changing its state of motion when a force is applied. It is determined by the strength of its mutual gravitational attraction to other bodies, its resistance to being accelerated by a force, and in the theory of relativity gives the mass–energy content of a system. The SI unit of mass is the kilogram (kg).

Mass is not the same as weight, even though we often calculate an object's mass by measuring its weight with a spring scale instead of comparing it to known masses. An object on the Moon would weigh less than it would on Earth because of the lower gravity, but it would still have the same mass.

For everyday objects and energies well-described by Newtonian physics, mass describes the amount of matter in an object. However, at very high speeds or for subatomic particles, special relativity shows that energy is an additional source of mass. Thus, any stationary body having mass has an equivalent amount of energy, and all forms of energy resist acceleration by a force and have gravitational attraction.

Las Vegas

Las Vegas (/lɑːs ˈveɪɡəs/, also locally /lɑːs ˈvɛɡᵻs/; Spanish: [laz ˈβeɣas]) officially the City of Las Vegas and often known as simply Vegas, is a city in the United States, the most populous city in the state of Nevada, the county seat of Clark County, and the city proper of the Las Vegas Valley. Las Vegas is an internationally renowned major resort city known primarily for gambling, shopping, fine dining and nightlife and is the leading financial and cultural center for Southern Nevada.

The city bills itself as The Entertainment Capital of the World, and is famous for its mega casino–hotels and associated entertainment. A growing retirement and family city, Las Vegas is the 29th-most populous city in the United States, with a population of 603,488 at the 2013 United States Census Estimates. The 2013 population of the Las Vegas metropolitan area was 2,027,828. The city is one of the top three leading destinations in the United States for conventions, business, and meetings. In addition, the city's metropolitan area has more AAA Five Diamond hotels than any other city in the world, and is a global leader in the hospitality industry. Today, Las Vegas is one of the top tourist destinations in the world.

Ordinary Time

Ordinary Time refers to two periods of time in the Christian liturgical calendar, particularly the calendar of the ordinary form of the Roman Rite of the Catholic Church, although some other churches of Western Christianity also use the term. In Latin, the name of this time is Tempus per annum translated as time during the year.

Since 1970 in the ordinary form of the Roman Rite of the Catholic Church, Ordinary Time comprises two periods: one beginning on the day after the Feast of the Baptism of the Lord (the end of the Christmas season) and ending on the day before Ash Wednesday, the other beginning on the Monday after Pentecost, the conclusion of the Easter season, and continuing until the Saturday before the First Sunday of Advent. These periods of time combined are the longest time in the liturgical year.

The weeks of Ordinary Time are numbered. Several Sundays bear the name of feasts or solemnities celebrated on those days, including Trinity Sunday and the Feast of Christ the King.

October 1

October 1 is the 274th day of the year (275th in leap years) in the Gregorian calendar. There are 91 days remaining until the end of the year.

Events

Mass (Catholic Church)

The Mass or Eucharist is the central act of Divine worship in the Catholic Church, which describes it as "the source and summit of the Christian life".H

Many of the Catholic Church's other sacraments are celebrated in the framework of the Eucharist. The term "Mass" is generally used only of Latin Church celebrations of the Eucharist, while the Eastern Orthodox Church, Oriental Orthodox Church, and the various Eastern Catholic Churches use terms such as "Divine Liturgy", "Holy Qurbana", and "Badarak", in accordance with each one's tradition.

The term "Mass" is derived from the Late Latin word missa (dismissal), a word used in the concluding formula of Mass in Latin: "Ite, missa est" ("Go; it is the dismissal"). "In antiquity, missa simply meant 'dismissal'. In Christian usage, however, it gradually took on a deeper meaning. The word 'dismissal' has come to imply a 'mission'. These few words succinctly express the missionary nature of the Church"

For information on the theology of the Eucharist and on the Eucharistic liturgy of other Christian denominations, see "Mass (liturgy)", "Eucharist" and "Eucharistic theology".