NEW YORK ( TheStreet) -- Orbital Sciences Corporation (NYSE: ORB) is trading at unusually high volume Tuesday with 1.4 million shares changing hands. It is currently at 4.4 times its average daily volume and trading up 46 cents (+3.4%) at $14.04 as of 4:01 p.m. ET. Orbital Sciences has a market cap of $872.2 million and is part of the industrial goods sector and aerospace/defense industry. Shares are down 20.7% year to date as of the close of trading on Monday. Orbital Sciences Corporation develops and manufactures small and medium-class rockets and space systems for commercial, military, and civil government customers. The company operates in three segments: Launch Vehicles, Satellites and Space Systems, and Advanced Space Programs. The company has a P/E ratio of 13.6, above the average aerospace/defense industry P/E ratio of 13.4 and below the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Orbital Sciences as a buy. The company's strengths can be seen in multiple areas, such as its revenue growth, good cash flow from operations, impressive record of earnings per share growth, compelling growth in net income and increase in stock price during the past year. We feel these strengths outweigh the fact that the company shows low profit margins. You can view the full Orbital Sciences Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center. Interested in other stocks that are rising on unusually high volume? Get free SMS text alerts sent to you when the action happens by texting HVUP to 95370 or select from multiple alert options.