Because boron is produced entirely by cosmic ray spallation and not by stellar nucleosynthesis, it is a low-abundance element in both the solar system and the Earth's crust.

Because the number of days in the tropical year is not a whole number, a solar calendar must have a different number of days in different years.

Because the Julian calendar's implicit solar year has drifted further over the centuries than those of the Gregorian or Hebrew calendars, Julian Easter is a lunation later than Gregorian Easter in five years out of nineteen, namely years 3, 8, 11, 14, and 19 of the Christian cycle.

Because it is warm, the surface radiates far IR thermal radiation that consists of wavelengths that are predominantly much longer than the wavelengths that were absorbed ( the overlap between the incident solar spectrum and the terrestrial thermal spectrum is small enough to be neglected for most purposes ).

Because of the limited techniques currently available to detect extrasolar planets, many of those found to date have been of a size associated, in our solar system, with gas giants.

Because of the roughly eleven-day difference between twelve lunar months and one solar year, the length of the Hebrew calendar year varies in the repeating 19-year Metonic cycle of 235 lunar months, with the intercalary month added according to defined rules every two or three years, for a total of 7 times per 19 years.

Because of the nonzero planetary masses and resulting perturbations, Kepler's laws apply only approximately and not exactly to the motions in the solar system.

Because of its relative nuclear instability, lithium is less common in the solar system than 25 of the first 32 chemical elements even though the nuclei are very light in atomic weight.

Because there are about twelve lunations ( synodic months ) in a solar year, this period ( 354. 37 days ) is sometimes referred to as a lunar year.

Because the solar wind exists are all time and not just times of solar flares, the magnetopause is a permanent feature of the space near any planet with a magnetic field.

Because < sup > 60 </ sup > Fe has such a long half-life, its persistence in materials in the solar system at high enough concentrations may have generated observable variations in the isotopic composition of < sup > 60 </ sup > Ni.

Because of the similarity between solar-induced geomagnetic storms and nuclear E3, it has become common to refer to solar-induced geomagnetic storms as " solar EMP.

Because the Earth's orbit around the sun is elliptical, and because of the obliquity of the Earth's axis relative to the plane of the orbit ( the ecliptic ), the apparent solar day varies a few dozen seconds above or below the mean value of 24 hours.

Because moons in retrograde orbits cannot have formed out of the same region of the solar nebula as the planets they orbit, it must have been captured from elsewhere.

Because the Qattara Depression is in a very hot dry region with very little cloud cover the water released at the level would spread out from the release point across the basin and evaporate from solar influx.

Because most planets ( except Mercury ), and many small solar system bodies have orbits with small inclinations to the ecliptic, it is convenient to use it as the

Because the Earth orbits the Sun once a year, the sidereal time at any one place at midnight will be about four minutes later each night, until, after a year has passed, one additional sidereal day has elapsed compared to the number of solar days that have gone by.

Because of its symmetrical shape, Vanguard 1 was used by experimenters for use in determining upper atmospheric densities as a function of altitude, latitude, season, and solar activity.

Because a typical lunisolar calendar has a year made up of a whole number of lunar months, it can't indicate the position of Earth on its revolution around the sun as well as a pure solar calendar can.

Because the Earth follows an elliptical orbit around the Sun, the solar mass can be computed from the equation for the orbital period of a small body orbiting a central mass.

Because of the proper and improper motions of the sun, one solar day ( the time between two upper culminations of the sun ) is longer than one sidereal day ( the time between two like culminations of any fixed star ).

Because the solar wind particles are expected to be embedded in the wafers, whereas the contaminating dirt is likely just to lie on the surface, it may be possible to separate the dirt from the samples.

Because the ancient Egyptian year was almost a quarter of a day shorter than the solar year and stellar events therefore " wandered " through the calendar, it has been referred to as the annus vagus, or " wandering year ".

Because the detector is about equally sensitive to EUV and visible photons, and the Sun is about one billion ( 10 < sup > 9 </ sup >) times brighter in visible light than in EUV, special thin foil filters are used to block the visible light while admitting the EUV.

Because EUV operates in a vacuum and requires reflective optics, EUV lithography tools have special overlay concerns, recently studied by IMEC, along with ASML.

Because of independence, the decision whether to use of the axiom of choice ( or its negation ) in a proof cannot be made by appeal to other axioms of set theory.

Because of the pen's reliance on gravity to coat the ball with ink, most ballpoint pens cannot be used to write upside down.

Because arcs of circles and ellipses cannot be exactly represented by Bézier curves, they are first approximated by Bézier curves, which are in turn approximated by arcs of circles.

Because the islands cannot produce enough goods to support the population, about 90 % of their food and consumer goods must be imported.

Because Njazidja is geologically a relatively new island, its soil is thin and rocky and cannot hold water.

Because Guest's children are adopted, they cannot inherit the family barony under the terms of the letters patent that created it, though a 2004 Royal Warrant addressing the style of a peer's adopted children states that they can use courtesy titles.

Because interframe compression copies data from one frame to another, if the original frame is simply cut out ( or lost in transmission ), the following frames cannot be reconstructed properly.

Because these natural phenomena cannot be controlled, they inevitably affect the outcome of the given activity or event.

Because the output pulse from a Geiger-Muller tube is always the same magnitude regardless of the energy of the incident radiation, the tube cannot differentiate between certain radiation types.

* Stoppage Because of Strikes: The fighter is overwhelmed by strikes ( blows ), and cannot intelligently defend himself.

Because meiosis is a " one-way " process, it cannot be said to engage in a cell cycle as mitosis does.

Because the chromosomes cannot be distinguished in the synaptonemal complex, the actual act of crossing over is not perceivable through the microscope, and chiasmata are not visible until the next stage.

Because of this topography, the ocean cannot be seen from much of Malden's interior.

Because MIDI is a set of commands that create sound, MIDI sequences can be manipulated in ways that prerecorded audio cannot.

Because DNA polymerase III cannot synthesize in the 3 '→ 5 ' direction, the lagging strand is synthesized in short segments known as Okazaki fragments.

Because individual PET scans are more expensive than " conventional " imaging with computed tomography ( CT ) and magnetic resonance imaging ( MRI ), expansion of FDG-PET in cost-constrained health services will depend on proper health technology assessment ; this problem is a difficult one because structural and functional imaging often cannot be directly compared, as they provide different information.

Because it has no finite spatiotemporal extent, a single point of Minkowski space cannot be an occasion of experience, but is an abstraction from an infinite set of occasions of experience, as explained in Process and Reality.

Because humans are mortal and limited, a single human religious system cannot encompass all of the religious or spiritual absolute reality ...." ( p. 167 )

Because of the way these activities structure the economic framework, Habermas felt that the state cannot be looked at as passively responding to economic class interests.

Because the viewfinder and the film lens cannot share the same optical path, the viewing lens is aimed to intersect with the film lens at a fixed point somewhere in front of the camera.

Because modern technology requires a supporting infrastructure, more primitive methods are employed — for example, horses instead of tractors ( because tractors cannot reproduce themselves ).

Because it cannot be applied in thick layers as oil paints can, tempera paintings rarely have the deep color saturation that oil paintings can achieve.

Because of this, confidential information cannot be the subject of theft, as it is not capable of being taken as only tangibles can be taken.

Because a tachyon always moves faster than light, we cannot see it approaching.

Because no Equal Rights Party ballot for 1872 has been preserved, this claim cannot be confirmed.