Among the stories concerning comet-watching, there is one that contains an illustration and a lesson also. "Messier, who had acquired the name of 'the comet-hunter,' from the number he discovered, was particularly anxious upon the occasion. Of great simplicity of character, his zeal after comets was often displayed in the oddest manner. While attending the death-bed of his wife, and necessarily absent from his observatory, the discovery of one was snatched from him by Montaigne de Limoges. This was a grievous blow. A visitor began to offer him consolation on account of his recent bereavement, when Messier, thinking only of the comet, answered, 'I had discovered twelve; alas, to be robbed of the thirteenth by that Montaigne!' But instantly recollecting himself, he exclaimed, 'Ah! cette pauvre femme!' and went on deploring wife and comet together." He evidently lived so much in the heavens that he forgot his wife; and if science can sometimes carry a man away from all the trials of this mortal life, surely our heavenly life ought to lift us up above all the distractions and cares that afflict us.
The return of a comet is frequently announced with great certainty. This paragraph appeared in a newspaper: "On the whole, it may be considered as tolerably certain that the comet will become visible in every part of Europe about the latter end of August, or the beginning of September next. It will most probably be distinguishable by the naked eye, like a star of the first magnitude, but with a duller light than that of a planet, and surrounded with a pale nebulosity, which will slightly impair its splendor. On the night of the 7th of October the comet will approach the well-known constellation of the Great Bear; and between that and the 11th it will pass directly through the seven conspicuous stars of that constellation. Toward the close of November the comet will plunge among the rays of the sun and disappear, and not issue from them, on the other side, until the end of December. This prospectus of the movements of a body, invisible at the time, millions of miles away, is nearly as definite as the early advertisements of coaching between London and Edinburgh. Let us now place the observations of the eye alongside the anticipations of science, and we shall find that science has proved almost absolutely correct."
Just think of the calculations, gentlemen, that were necessary; for, though a comet does not interfere with the course of a planet, a planet interferes very considerably with the course of a comet; so that, in their calculations, the astronomers had to recollect the track in which the comet would have to travel. Thinking of him as a way-worn traveler, we remember that he will have to go by Neptune's bright abode, and Neptune will be sure to give him a cup of tea; then he will journey on as far as Uranus, and put up for the night there; in the morning he will pay an early visit to Saturn, and he will stay there for breakfast; he will dine with Jupiter; by and by he will reach Mars, and there will be sure to be a row there; and he will be glad when he gets to Venus, and, of course, he will be detained by her charms. You will, therefore, very readily see, gentlemen, that the calculations as to the return of a comet are extremely difficult, and yet the astronomers do estimate the time to a nicety. This science is a very marvelous one, not only for what it reveals, but for the talent which it brings out, and the lessons it continually teaches us about the wonderful works of our great Father.
We have done with the solar system, and even with those interlopers which come to us every now and then from far remote systems, for a comet, I suppose, is only seen for a month, or a week, and then sometimes does not reappear for hundreds of years. Where have they gone all that while? Well, they have gone somewhere, and they are serving the purpose of the God who made them, I dare say; but, for my own part, I would not like to be a comet in God's system. I would like to have my fixed place, and keep on shining for the Lord there. I have lived in London for a good many years, and I have seen many comets come and go during that time. Oh, the great lights I have seen rush by! They have gone off into some unknown sphere, as comets usually do. I have generally noticed that, when men are going to do so much more than everybody else, and they are so amazingly pompous over it, their history is usually pretty accurately described by that simple simile of going up like a rocket and coming down like a stick.
I do not know whether you can, in imagination, lean over the battlements of this little solar system, and see what there is beyond it. Do not narrow your minds, gentlemen, to a few hundred millions of miles! If you look out for a long way indeed, you will begin to see a star. I should only be uttering meaningless words if I told you its distance from us; yet there are others, of those that we are able to see, that are almost immeasurably farther away. They have taken a deal of trouble to send us a ray of light such a vast distance, to inform us that they are getting on very well, and that, though they are at such a distance from us, they still enjoy themselves as best they can in our absence.
These stars, as the common people look at them, seem to be scattered about in the heavens, as we say, "anyhow." I always admire that charming variety; and I am thankful to God that he has not set the stars in straight lines, like rows of street-lamps. Only think, brethren, how it would be if we looked up at night, and saw the stars all arranged in rows, like pins on a paper! Bless the Lord, it is not so! He just took a handful of bright worlds, and scattered them about the sky, and they dropped into most beautiful positions, so that people say, "There is the Great Bear;" and, "That is Charles's Wain," and every countryman knows the Reaping-hook. Have you not seen it, brethren? Others say, "That is the Virgin, and that is the Ram, and that is the Bull," and so on.
I think that naming of the various constellations is very like a good deal of mystical preaching that there is nowadays. The preachers say, "That is so-and-so, and that is so-and-so." Well, perhaps it is so; but I do not see it. You may imagine anything you like in the constellations of the heavens. I have pictured a fortress in the fire, and watched it being built up, and seen little soldiers come and pull it all down. You can see anything in the fire, and in the sky, and in the Bible, if you like to look for it in that way; you do not see it in reality, it is only a freak of your imagination. There are no bulls and bears in the heavens. There may be a virgin, but she is not to be worshiped as the Romanists teach. I hope you all know the pole-star; you ought also to know the pointers; they point to the pole-star, and that is just what we ought to do, to direct the poor slaves of sin and Satan to the true Star of liberty, our Lord and Saviour, Jesus Christ.
Then there are the Pleiades; almost anybody can tell you where they are. They are a cluster of apparently little stars, but they are intensely bright. They teach me that, if I am a very little man, I must try to be very bright; if I cannot be like Aldebaran, or some of the brightest gems of the sky, I must be as bright as I can in my own particular sphere, and be as useful there as if I were a star of the first magnitude. Then, on the other side of the globe, they look up to the Southern Cross. I dare say one of our brethren from Australia will give you a private lecture upon that constellation. It is very beautiful to think of the Cross being the guide of the mariner; it is the best guide any one can have, either this side of the tropics or the other.
Besides the stars, there are vast luminous bodies which are called Nebulæ. In some parts of the heavens there are enormous masses of light-matter; they were supposed by some to be the material out of which worlds were made. These were the lumps of mortar, out of which, according to the old atheistic theory, worlds grew by some singular process of evolution; but when Herschel turned his telescope upon them, he very soon put the nose of that theory out of joint, for he discovered that these nebulæ were simply enormous masses of stars, such myriads upon myriads of miles away that, to our sight, they looked just like a little dust of light.
There are many wonderful things to be learned about the stars, to which I hope you will give your earnest attention as you have the opportunity. Among the rest is this fact, that some stars have ceased to be visible to us. Tycho Brahé said that on one occasion he found a number of villagers looking up at the sky; and on asking them why they were gazing at the heavens, they told him that a new star had suddenly appeared. It shone brightly for a few months, and then vanished. Many times a starry world has seemed to turn red, as if it were on fire; it has apparently burned, and blazed away, and then disappeared. Kepler, writing concerning such a phenomenon, says: "What it may portend is hard to determine; and thus much only is certain, that it comes to tell mankind either nothing at all, or high and weighty news, quite beyond human sense and understanding." In allusion to the opinions of some, who explained the novel object by the Epicurean doctrine of a fortuitous combination of atoms, he remarks, with characteristic oddity, yet good sense, "I will tell these disputants—my opponents—not my opinion, but my wife's. Yesterday, when weary with writing, and my mind quite dusty with considering these atoms, I was called to supper, and a salad that I had asked for was set before me. 'It seems, then,' said I aloud, 'that if pewter dishes, leaves of lettuce, grains of salt, drops of water, vinegar, and oil, and slices of egg, had been flying about in the air from all eternity, it might at last happen, by chance, that there would come a salad.' 'Yes,' says my wife, 'but not one so nice or well dressed as this which I have made for you.'"