If the spacecraft detects an anomaly, it changes the carrier between four tones, based on urgency.

If the manoeuver is timed properly, Mars will be " arriving " under the spacecraft when this happens.

If the brightness of the object exceeded the maximum limit of eight times the brightness of Canopus, the spacecraft would search for a new star.

If the CSM failed, the spacecraft and Saturn IB for the next Skylab mission would have been launched with two astronauts to retrieve the crew ; given Skylab's ample supplies, its residents would have been able to wait up to several weeks for the rescue mission.

If the propulsion system must produce large amounts of thrust, or have a high specific impulse, as on the main motor of an interplanetary spacecraft, other technologies are used.

If the nuclear reactor is left on the ground and its energy transmitted to the spacecraft, the weight of the reactor is removed as well.

If done by direct propulsion, the rocket equation dictates that a large fraction of the spacecraft mass must be fuel.

If the atmosphere is thick enough, a single pass through it can be sufficient to slow a spacecraft as needed.

If the spacecraft's purpose is only to fly by the inner planet, then there is typically no need to slow the spacecraft.

If a spacecraft gets too far into the atmosphere, the energy lost to friction can exceed that gained from the planet's gravity.

If a spacecraft gets close to the Schwarzschild radius of a black hole ( the ultimate gravity well ), space becomes so curved that slingshot orbits require more energy to escape than the energy that could be added by the black hole's motion.

If the spacecraft counters the force towards the asteroid by, e. g., an ion thruster, the net effect is that the asteroid is accelerated towards the spacecraft and thus slightly deflected from its orbit.

If a spacecraft placed at the Earth – Moon point is given even a slight nudge towards the Moon, for instance, the Moon's gravity will now be greater and the spacecraft will be pulled away from the point.

If Slayton had flown MA-7, his spacecraft would have been named Delta 7, as this would have been the fourth manned flight and Delta ( Δ ) is the fourth letter in the Greek alphabet.

If used over Venus for instance, the spacecraft could aeromaneuver with the lift provided by the waverider to a degree that no gravitational slingshot could hope to achieve.

If the spacecraft is meant to be able to return to its point of launch " on command ", then some sort of maneuvering will be required to counteract the fact that the Earth is turning under the spacecraft as it flies.

If a collision with larger debris does occur, many of the resulting fragments from the damaged spacecraft will be in the mass range, and these objects become an additional collision risk.

If the speed of the particle beams is great enough, the radiation that hits the spacecraft will be of a frequency that can be reflected.

) If the timer expires, the spacecraft enters a " command loss " algorithm that cycles through a predefined sequence of hardware and / or software modes ( such as the selection of a backup command receiver ) until a valid command is received.

If either one ever started making promises, there is no telling where the promises would end.

If you find out anything, come on back here and we'll get started on it ''.

In the biography, Paul Allen wrote, regarding a suggestion in Cosmopolitan that his plays were becoming autobiographical: " If we take that to mean that his plays tell his own life story, he still hasn't started.

If the sets are short to medium length the caller will often try to run the dance until each couple has danced with every other couple both as a 1 and a 2 and returned to where they started.

If, after that, they breach the order, proceedings can be started and in theory the person involved can be sent to prison.

If my character was having a nervous breakdown, I started to have one ".

If the session has already started, commence recording immediately.

If there is no distinct boundary, then the population of A suddenly stopped using the customs characteristic of A and suddenly started using those of B, an unlikely scenario in the process of evolution.

If not, the relay is still effectively open ( for instance, by the above rules ): it is easy to forge e-mail header and envelope information, it is considerably harder to successfully forge an IP address in a TCP / IP transaction due to the three-way handshake that occurs as a connection is started.

If it had not been for World War I, the Ilya Muromets would have probably started revenue flights that same year.

If the chosen key started the car, the contestant won it and retired ; otherwise, the contestant returned the next day with that car eliminated should he or she return to the bonus game.

If the divorce is started with a Summons with Notice then the grounds will either have to be proven by plaintiff's affidavit or by testimony at an inquest if the divorce is uncontested or to be granted by default.

With the Guardians move to new presses, If ... started to appear in full colour in September 2005.

If we take such a tiling and enlarge it so that the formerly smallest tile now has the size of the square S we started out from, then we see that we obtain from this a tiling of the plane with integral squares, each having a different size.

If the Universe is contained within an ever-expanding sphere ( which may have started from a single point ), it can still appear infinite for all practical purposes.

If your car has no steering then you can only drive straight, which means you can only drive on a line ( in this case the north-south line since you started facing north ).

In 2002, Anderson started recording songs for a project called The Big If, which has not been released ( as of 2010 ).

If we had been able to accept that I would go out and earn the money and he would concentrate on running the home, things might have turned out better .... For three years I was besotted with this loveable reprobate, but then the icing on the cake began to chip off and the love started to wear thin.

If EA or TEF is suspected, all oral feedings are stopped and intravenous fluids are started.

If they started on the right side, they would instead hear a series of longer tones followed by short pauses, while the signal was on the " dot " side of the antenna.

If there is an underlying cause such as AIDS, specific therapy can be started as well.

* From the 1990s, the popular meanings of the word criticism have started to evolve more strongly toward " having an objection ", " expressing dissent ", " stating a dislike ", " wanting to dissociate from something ", or " rejecting something " (" If you liked it, you would not be criticizing it ").

If a player is listed in the starting lineup as the team's pitcher, but is replaced before facing an opposing batter, the player is credited with a game pitched but not a game started ; there have been instances in major league history in which a starting pitcher was removed before his first pitch due to an injury, perhaps suffered while batting or running the bases during the top half of the first inning.

If the router detects a network unreachable, the timer is started.